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379982720 = 27513109419
BaseRepresentation
bin10110101001100…
…001001110000000
3222111000010022002
4112221201032000
51234233421340
6101412203132
712262541225
oct2651411600
9874003262
10379982720
11185543707
12a73094a8
1360953360
143867394c
152355c715
hex16a61380

379982720 has 128 divisors (see below), whose sum is σ = 989604000. Its totient is φ = 138682368.

The previous prime is 379982683. The next prime is 379982723. The reversal of 379982720 is 27289973.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379982723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906671 + ... + 907089.

Almost surely, 2379982720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 379982720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494802000).

379982720 is an abundant number, since it is smaller than the sum of its proper divisors (609621280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

379982720 is a wasteful number, since it uses less digits than its factorization.

379982720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 379982720 is about 19493.1454619310. The cubic root of 379982720 is about 724.3046650775.

The spelling of 379982720 in words is "three hundred seventy-nine million, nine hundred eighty-two thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 13 16 20 26 32 40 52 64 65 80 104 109 128 130 160 208 218 260 320 416 419 436 520 545 640 832 838 872 1040 1090 1417 1664 1676 1744 2080 2095 2180 2834 3352 3488 4160 4190 4360 5447 5668 6704 6976 7085 8320 8380 8720 10894 11336 13408 13952 14170 16760 17440 21788 22672 26816 27235 28340 33520 34880 43576 45344 45671 53632 54470 56680 67040 69760 87152 90688 91342 108940 113360 134080 174304 181376 182684 217880 226720 228355 268160 348608 365368 435760 453440 456710 593723 697216 730736 871520 906880 913420 1187446 1461472 1743040 1826840 2374892 2922944 2968615 3486080 3653680 4749784 5845888 5937230 7307360 9499568 11874460 14614720 18999136 23748920 29229440 37998272 47497840 75996544 94995680 189991360 379982720