28904364656272 has 20 divisors (see below), whose sum is σ = 64002521739136. Its totient is φ = 12387584852640.

The previous prime is 28904364656261. The next prime is 28904364656291. The reversal of 28904364656272 is 27265646340982.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129037342104 + ... + 129037342327.

Almost surely, 2^{28904364656272} is an apocalyptic number.

It is an amenable number.

28904364656272 is an abundant number, since it is smaller than the sum of its proper divisors (35098157082864).

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

28904364656272 is a wasteful number, since it uses less digits than its factorization.

28904364656272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258074684446 (or 258074684440 counting only the distinct ones).

The product of its (nonzero) digits is 209018880, while the sum is 64.

The spelling of 28904364656272 in words is "twenty-eight trillion, nine hundred four billion, three hundred sixty-four million, six hundred fifty-six thousand, two hundred seventy-two".