28626104872 has 8 divisors (see below), whose sum is σ = 53673946650. Its totient is φ = 14313052432.

The previous prime is 28626104861. The next prime is 28626104873. The reversal of 28626104872 is 27840162682.

It can be written as a sum of positive squares in only one way, i.e., 26848133316 + 1777971556 = 163854^2 + 42166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28626104873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1789131547 + ... + 1789131562.

Almost surely, 2^28626104872 is an apocalyptic number.

It is an amenable number.

28626104872 is a deficient number, since it is larger than the sum of its proper divisors (25047841778).

28626104872 is a wasteful number, since it uses less digits than its factorization.

28626104872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578263115 (or 3578263111 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 28626104872 in words is "twenty-eight billion, six hundred twenty-six million, one hundred four thousand, eight hundred seventy-two".