28664867477004 has 96 divisors (see below), whose sum is σ = 73040921856000. Its totient is φ = 8677303810560.

The previous prime is 28664867476991. The next prime is 28664867477009. The reversal of 28664867477004 is 40077476846682.

It is a self number, because there is not a number n which added to its sum of digits gives 28664867477004.

It is not an unprimeable number, because it can be changed into a prime (28664867477009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 524691562 + ... + 524746190.

It is an arithmetic number, because the mean of its divisors is an integer number (760842936000).

Almost surely, 2^{28664867477004} is an apocalyptic number.

It is an amenable number.

28664867477004 is an abundant number, since it is smaller than the sum of its proper divisors (44376054378996).

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

28664867477004 is a wasteful number, since it uses less digits than its factorization.

28664867477004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58703 (or 58701 counting only the distinct ones).

The product of its (nonzero) digits is 606928896, while the sum is 69.

The spelling of 28664867477004 in words is "twenty-eight trillion, six hundred sixty-four billion, eight hundred sixty-seven million, four hundred seventy-seven thousand, four".