28152572 has 24 divisors (see below), whose sum is σ = 56534016. Its totient is φ = 12016368.

The previous prime is 28152563. The next prime is 28152581. The reversal of 28152572 is 27525182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28152563) and next prime (28152581).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5453 + ... + 9275.

It is an arithmetic number, because the mean of its divisors is an integer number (2355584).

Almost surely, 2^28152572 is an apocalyptic number.

It is an amenable number.

28152572 is an abundant number, since it is smaller than the sum of its proper divisors (28381444).

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

28152572 is a wasteful number, since it uses less digits than its factorization.

28152572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097 (or 4095 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 28152572 is about 5305.8997352004. The cubic root of 28152572 is about 304.2094441952.

The spelling of 28152572 in words is "twenty-eight million, one hundred fifty-two thousand, five hundred seventy-two".