28672371 has 36 divisors (see below), whose sum is σ = 51272208. Its totient is φ = 15118272.

The previous prime is 28672367. The next prime is 28672381. The reversal of 28672371 is 17327682.

28672371 is a `hidden beast` number, since 286 + 7 + 2 + 371 = 666.

It is not a de Polignac number, because 28672371 - 2² = 28672367 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28672351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9301 + ... + 11993.

It is an arithmetic number, because the mean of its divisors is an integer number (1424228).

Almost surely, 2^28672371 is an apocalyptic number.

28672371 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28672371 is a deficient number, since it is larger than the sum of its proper divisors (22599837).

28672371 is a wasteful number, since it uses less digits than its factorization.

28672371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732 (or 2716 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 28672371 is about 5354.6588126602. The cubic root of 28672371 is about 306.0703093597.

The spelling of 28672371 in words is "twenty-eight million, six hundred seventy-two thousand, three hundred seventy-one".