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28000157053 = 112987774787
BaseRepresentation
bin11010000100111100…
…000111110101111101
32200021101020100120211
4122010330013311331
5424321020011203
620510232312421
72010604256641
oct320474076575
980241210524
1028000157053
11109693a4470
125515242711
132842c7438b
1414d89d0c21
15add297c6d
hex684f07d7d

28000157053 has 8 divisors (see below), whose sum is σ = 31598923680. Its totient is φ = 24576940080.

The previous prime is 28000157041. The next prime is 28000157057. The reversal of 28000157053 is 35075100082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28000157053 - 25 = 28000157021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28000157057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43887075 + ... + 43887712.

It is an arithmetic number, because the mean of its divisors is an integer number (3949865460).

Almost surely, 228000157053 is an apocalyptic number.

It is an amenable number.

28000157053 is a deficient number, since it is larger than the sum of its proper divisors (3598766627).

28000157053 is a wasteful number, since it uses less digits than its factorization.

28000157053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87774827.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 28000157053 in words is "twenty-eight billion, one hundred fifty-seven thousand, fifty-three".

Divisors: 1 11 29 319 87774787 965522657 2545468823 28000157053