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2890219680 = 253252007097
BaseRepresentation
bin1010110001000101…
…0100000010100000
321110102110101001100
42230101110002200
521404344012210
61154443234400
7131423314305
oct25421240240
97412411040
102890219680
1112534a9907
12687b18a00
13370a2817a
141d5bcb0ac
1511db0b5c0
hexac4540a0

2890219680 has 72 divisors (see below), whose sum is σ = 9862879572. Its totient is φ = 770724864.

The previous prime is 2890219679. The next prime is 2890219697. The reversal of 2890219680 is 869120982.

It can be written as a sum of positive squares in 2 ways, for example, as 2646485136 + 243734544 = 51444^2 + 15612^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1002109 + ... + 1004988.

Almost surely, 22890219680 is an apocalyptic number.

2890219680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2890219680 is an abundant number, since it is smaller than the sum of its proper divisors (6972659892).

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

2890219680 is a wasteful number, since it uses less digits than its factorization.

2890219680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007118 (or 2007107 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 2890219680 is about 53760.7633874371. The cubic root of 2890219680 is about 1424.4382199242.

The spelling of 2890219680 in words is "two billion, eight hundred ninety million, two hundred nineteen thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 72 80 90 96 120 144 160 180 240 288 360 480 720 1440 2007097 4014194 6021291 8028388 10035485 12042582 16056776 18063873 20070970 24085164 30106455 32113552 36127746 40141940 48170328 60212910 64227104 72255492 80283880 90319365 96340656 120425820 144510984 160567760 180638730 192681312 240851640 289021968 321135520 361277460 481703280 578043936 722554920 963406560 1445109840 2890219680