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28308627594 = 23213617196073
BaseRepresentation
bin11010010111010100…
…110110000010001010
32201001212200021121200
4122113110312002022
5430434002040334
621001012045030
72021341235652
oct322724660212
981055607550
1028308627594
11110075339a5
1255a0603776
132891b49820
14152796b362
15b0a3cb799
hex69753608a

28308627594 has 48 divisors (see below), whose sum is σ = 66160857672. Its totient is φ = 8696185344.

The previous prime is 28308627593. The next prime is 28308627629. The reversal of 28308627594 is 49572680382.

28308627594 is a `hidden beast` number, since 2 + 8 + 3 + 0 + 8 + 627 + 5 + 9 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3241821969 + 25066805625 = 56937^2 + 158325^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28308627594.

It is not an unprimeable number, because it can be changed into a prime (28308627593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46342 + ... + 242414.

Almost surely, 228308627594 is an apocalyptic number.

28308627594 is an abundant number, since it is smaller than the sum of its proper divisors (37852230078).

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

28308627594 is a wasteful number, since it uses less digits than its factorization.

28308627594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196711 (or 196708 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 28308627594 in words is "twenty-eight billion, three hundred eight million, six hundred twenty-seven thousand, five hundred ninety-four".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 617 1234 1851 3702 5553 8021 11106 16042 24063 48126 72189 144378 196073 392146 588219 1176438 1764657 2548949 3529314 5097898 7646847 15293694 22940541 45881082 120977041 241954082 362931123 725862246 1088793369 1572701533 2177586738 3145403066 4718104599 9436209198 14154313797 28308627594