28245232 has 20 divisors (see below), whose sum is σ = 55387080. Its totient is φ = 13951808.

The previous prime is 28245227. The next prime is 28245241. The reversal of 28245232 is 23254282.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28245232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9307 + ... + 11962.

It is an arithmetic number, because the mean of its divisors is an integer number (2769354).

Almost surely, 2^28245232 is an apocalyptic number.

It is an amenable number.

28245232 is a deficient number, since it is larger than the sum of its proper divisors (27141848).

28245232 is a wasteful number, since it uses less digits than its factorization.

28245232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21360 (or 21354 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 28245232 is about 5314.6243517299. The cubic root of 28245232 is about 304.5428320639.

The spelling of 28245232 in words is "twenty-eight million, two hundred forty-five thousand, two hundred thirty-two".