28591036416 has 72 divisors (see below), whose sum is σ = 82576215540. Its totient is φ = 9530339328.

The previous prime is 28591036379. The next prime is 28591036421. The reversal of 28591036416 is 61463019582.

28591036416 is a `hidden beast` number, since 28 + 591 + 0 + 36 + 4 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 757150 + ... + 794013.

Almost surely, 2^28591036416 is an apocalyptic number.

It is an amenable number.

28591036416 is an abundant number, since it is smaller than the sum of its proper divisors (53985179124).

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

28591036416 is a wasteful number, since it uses less digits than its factorization.

28591036416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551191 (or 1551168 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 28591036416 in words is "twenty-eight billion, five hundred ninety-one million, thirty-six thousand, four hundred sixteen".