28641550272 has 28 divisors (see below), whose sum is σ = 75780768936. Its totient is φ = 9547183360.

The previous prime is 28641550213. The next prime is 28641550283. The reversal of 28641550272 is 27205514682.

It is a congruent number.

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, 74587179 + ... + 74587562.

Almost surely, 2^28641550272 is an apocalyptic number.

It is an amenable number.

28641550272 is an abundant number, since it is smaller than the sum of its proper divisors (47139218664).

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

28641550272 is a wasteful number, since it uses less digits than its factorization.

28641550272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149174756 (or 149174746 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 28641550272 in words is "twenty-eight billion, six hundred forty-one million, five hundred fifty thousand, two hundred seventy-two".