28063154538 has 20 divisors (see below), whose sum is σ = 62882254050. Its totient is φ = 9354384792.

The previous prime is 28063154513. The next prime is 28063154557. The reversal of 28063154538 is 83545136082.

28063154538 is a `hidden beast` number, since 2 + 8 + 0 + 63 + 1 + 54 + 538 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17951444289 + 10111710249 = 133983^2 + 100557^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28063154493 and 28063154502.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 86614513 + ... + 86614836.

Almost surely, 2^28063154538 is an apocalyptic number.

28063154538 is an abundant number, since it is smaller than the sum of its proper divisors (34819099512).

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

28063154538 is a wasteful number, since it uses less digits than its factorization.

28063154538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173229363 (or 173229354 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 28063154538 in words is "twenty-eight billion, sixty-three million, one hundred fifty-four thousand, five hundred thirty-eight".