28571392 has 36 divisors (see below), whose sum is σ = 57395520. Its totient is φ = 14194688.

The previous prime is 28571381. The next prime is 28571401. The reversal of 28571392 is 29317582.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 59409 + ... + 59887.

It is an arithmetic number, because the mean of its divisors is an integer number (1594320).

Almost surely, 2^28571392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28571392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28697760).

28571392 is an abundant number, since it is smaller than the sum of its proper divisors (28824128).

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

28571392 is an equidigital number, since it uses as much as digits as its factorization.

28571392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 714 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 28571392 is about 5345.2214173035. The cubic root of 28571392 is about 305.7105782963.

The spelling of 28571392 in words is "twenty-eight million, five hundred seventy-one thousand, three hundred ninety-two".