28858166532 has 36 divisors (see below), whose sum is σ = 78558343500. Its totient is φ = 8879435712.

The previous prime is 28858166497. The next prime is 28858166543. The reversal of 28858166532 is 23566185882.

28858166532 is a `hidden beast` number, since 2 + 8 + 8 + 581 + 6 + 6 + 53 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8378839296 + 20479327236 = 91536^2 + 143106^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30830907 + ... + 30831842.

Almost surely, 2^28858166532 is an apocalyptic number.

It is an amenable number.

28858166532 is an abundant number, since it is smaller than the sum of its proper divisors (49700176968).

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

28858166532 is a wasteful number, since it uses less digits than its factorization.

28858166532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61662772 (or 61662767 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 28858166532 in words is "twenty-eight billion, eight hundred fifty-eight million, one hundred sixty-six thousand, five hundred thirty-two".