28972962395028 has 18 divisors (see below), whose sum is σ = 73237210498634. Its totient is φ = 9657654131664.

The previous prime is 28972962395023. The next prime is 28972962395029. The reversal of 28972962395028 is 82059326927982.

28972962395028 is a `hidden beast` number, since 2 + 8 + 9 + 7 + 2 + 96 + 23 + 9 + 502 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28600376676624 + 372585718404 = 5347932^2 + 610398^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28972962395023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 402402255451 + ... + 402402255522.

Almost surely, 2^{28972962395028} is an apocalyptic number.

It is an amenable number.

28972962395028 is an abundant number, since it is smaller than the sum of its proper divisors (44264248103606).

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

28972962395028 is a wasteful number, since it uses less digits than its factorization.

28972962395028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804804510983 (or 804804510978 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 72.

The spelling of 28972962395028 in words is "twenty-eight trillion, nine hundred seventy-two billion, nine hundred sixty-two million, three hundred ninety-five thousand, twenty-eight".