28571372 has 12 divisors (see below), whose sum is σ = 50443176. Its totient is φ = 14159040.

The previous prime is 28571369. The next prime is 28571381. The reversal of 28571372 is 27317582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31154 + ... + 32057.

It is an arithmetic number, because the mean of its divisors is an integer number (4203598).

Almost surely, 2^28571372 is an apocalyptic number.

It is an amenable number.

28571372 is a deficient number, since it is larger than the sum of its proper divisors (21871804).

28571372 is a wasteful number, since it uses less digits than its factorization.

28571372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63328 (or 63326 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 28571372 is about 5345.2195464733. The cubic root of 28571372 is about 305.7105069637.

The spelling of 28571372 in words is "twenty-eight million, five hundred seventy-one thousand, three hundred seventy-two".