28656032 has 24 divisors (see below), whose sum is σ = 56643300. Its totient is φ = 14270464.

The previous prime is 28656013. The next prime is 28656049. The reversal of 28656032 is 23065682.

It can be written as a sum of positive squares in 2 ways, for example, as 25847056 + 2808976 = 5084^2 + 1676^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 28656032.

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, 6944 + ... + 10272.

Almost surely, 2^28656032 is an apocalyptic number.

It is an amenable number.

28656032 is a deficient number, since it is larger than the sum of its proper divisors (27987268).

28656032 is a wasteful number, since it uses less digits than its factorization.

28656032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608 (or 3600 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 28656032 is about 5353.1329144717. The cubic root of 28656032 is about 306.0121600818.

The spelling of 28656032 in words is "twenty-eight million, six hundred fifty-six thousand, thirty-two".