28855372 has 24 divisors (see below), whose sum is σ = 62150816. Its totient is φ = 11415168.

The previous prime is 28855297. The next prime is 28855381. The reversal of 28855372 is 27355882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39273 + ... + 40000.

Almost surely, 2^28855372 is an apocalyptic number.

It is an amenable number.

28855372 is an abundant number, since it is smaller than the sum of its proper divisors (33295444).

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

28855372 is a wasteful number, since it uses less digits than its factorization.

28855372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79297 (or 79295 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 28855372 is about 5371.7196501679. The cubic root of 28855372 is about 306.7200920363.

The spelling of 28855372 in words is "twenty-eight million, eight hundred fifty-five thousand, three hundred seventy-two".