28572062868 has 72 divisors (see below), whose sum is σ = 73501209600. Its totient is φ = 9355810176.

The previous prime is 28572062819. The next prime is 28572062873. The reversal of 28572062868 is 86826027582.

28572062868 is a `hidden beast` number, since 2 + 8 + 5 + 7 + 2 + 0 + 628 + 6 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3528168 + ... + 3536256.

Almost surely, 2^28572062868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28572062868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36750604800).

28572062868 is an abundant number, since it is smaller than the sum of its proper divisors (44929146732).

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

28572062868 is a wasteful number, since it uses less digits than its factorization.

28572062868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9821 (or 9816 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 28572062868 in words is "twenty-eight billion, five hundred seventy-two million, sixty-two thousand, eight hundred sixty-eight".