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380301780 = 223523275581
BaseRepresentation
bin10110101010101…
…111000111010100
3222111121022222010
4112222233013110
51234324124110
6101423104220
712265340355
oct2652570724
9874538863
10380301780
111857413a1
12a7442070
1360a35651
1438717d2c
15235c2020
hex16aaf1d4

380301780 has 48 divisors (see below), whose sum is σ = 1111146624. Its totient is φ = 97004160.

The previous prime is 380301751. The next prime is 380301793. The reversal of 380301780 is 87103083.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136411 + ... + 139170.

It is an arithmetic number, because the mean of its divisors is an integer number (23148888).

Almost surely, 2380301780 is an apocalyptic number.

380301780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

380301780 is an abundant number, since it is smaller than the sum of its proper divisors (730844844).

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

380301780 is a wasteful number, since it uses less digits than its factorization.

380301780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275616 (or 275614 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 380301780 is about 19501.3276471116. The cubic root of 380301780 is about 724.5073339383.

The spelling of 380301780 in words is "three hundred eighty million, three hundred one thousand, seven hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 23 30 46 60 69 92 115 138 230 276 345 460 690 1380 275581 551162 826743 1102324 1377905 1653486 2755810 3306972 4133715 5511620 6338363 8267430 12676726 16534860 19015089 25353452 31691815 38030178 63383630 76060356 95075445 126767260 190150890 380301780