28905151764 has 12 divisors (see below), whose sum is σ = 67445354144. Its totient is φ = 9635050584.

The previous prime is 28905151757. The next prime is 28905151783. The reversal of 28905151764 is 46715150982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204381312 + ... + 1204381335.

Almost surely, 2^28905151764 is an apocalyptic number.

It is an amenable number.

28905151764 is an abundant number, since it is smaller than the sum of its proper divisors (38540202380).

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

28905151764 is a wasteful number, since it uses less digits than its factorization.

28905151764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408762654 (or 2408762652 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 28905151764 in words is "twenty-eight billion, nine hundred five million, one hundred fifty-one thousand, seven hundred sixty-four".