28772646924 has 48 divisors (see below), whose sum is σ = 78292928000. Its totient is φ = 8220755088.

The previous prime is 28772646913. The next prime is 28772646953. The reversal of 28772646924 is 42964627782.

It is a super-2 number, since 2×28772646924² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3491104 + ... + 3499335.

Almost surely, 2^28772646924 is an apocalyptic number.

It is an amenable number.

28772646924 is an abundant number, since it is smaller than the sum of its proper divisors (49520281076).

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

28772646924 is a wasteful number, since it uses less digits than its factorization.

28772646924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990467 (or 6990451 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 57.

The spelling of 28772646924 in words is "twenty-eight billion, seven hundred seventy-two million, six hundred forty-six thousand, nine hundred twenty-four".