228857136426 has 40 divisors (see below), whose sum is σ = 530492606820. Its totient is φ = 73655168832.

The previous prime is 228857136421. The next prime is 228857136427. The reversal of 228857136426 is 624631758822.

228857136426 is a `hidden beast` number, since 2 + 2 + 8 + 8 + 571 + 3 + 64 + 2 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 214323628401 + 14533508025 = 462951^2 + 120555^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (228857136421) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24352171 + ... + 24361566.

Almost surely, 2^228857136426 is an apocalyptic number.

228857136426 is an abundant number, since it is smaller than the sum of its proper divisors (301635470394).

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

228857136426 is a wasteful number, since it uses less digits than its factorization.

228857136426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48713780 (or 48713771 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 228857136426 in words is "two hundred twenty-eight billion, eight hundred fifty-seven million, one hundred thirty-six thousand, four hundred twenty-six".