28402802964 has 36 divisors (see below), whose sum is σ = 71893989076. Its totient is φ = 9454675968.

The previous prime is 28402802963. The next prime is 28402802977. The reversal of 28402802964 is 46920820482.

28402802964 is a `hidden beast` number, since 2 + 84 + 0 + 280 + 296 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15106868100 + 13295934864 = 122910^2 + 115308^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28402802963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 511789 + ... + 564564.

Almost surely, 2^28402802964 is an apocalyptic number.

It is an amenable number.

28402802964 is an abundant number, since it is smaller than the sum of its proper divisors (43491186112).

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

28402802964 is a wasteful number, since it uses less digits than its factorization.

28402802964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077096 (or 1077091 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 28402802964 in words is "twenty-eight billion, four hundred two million, eight hundred two thousand, nine hundred sixty-four".