28710232 has 32 divisors (see below), whose sum is σ = 56894400. Its totient is φ = 13560064.

The previous prime is 28710223. The next prime is 28710239. The reversal of 28710232 is 23201782.

It is a junction number, because it is equal to n+sod(n) for n = 28710197 and 28710206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28710239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9588 + ... + 12220.

It is an arithmetic number, because the mean of its divisors is an integer number (1777950).

Almost surely, 2^28710232 is an apocalyptic number.

It is an amenable number.

28710232 is a deficient number, since it is larger than the sum of its proper divisors (28184168).

28710232 is a wasteful number, since it uses less digits than its factorization.

28710232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715 (or 2711 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 28710232 is about 5358.1929789809. The cubic root of 28710232 is about 306.2049689725.

The spelling of 28710232 in words is "twenty-eight million, seven hundred ten thousand, two hundred thirty-two".