28605872 has 20 divisors (see below), whose sum is σ = 55528440. Its totient is φ = 14275968.

The previous prime is 28605833. The next prime is 28605911. The reversal of 28605872 is 27850682.

It is an interprime number because it is at equal distance from previous prime (28605833) and next prime (28605911).

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, 9188 + ... + 11900.

It is an arithmetic number, because the mean of its divisors is an integer number (2776422).

Almost surely, 2^28605872 is an apocalyptic number.

It is an amenable number.

28605872 is a deficient number, since it is larger than the sum of its proper divisors (26922568).

28605872 is a wasteful number, since it uses less digits than its factorization.

28605872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380 (or 3374 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 28605872 is about 5348.4457555443. The cubic root of 28605872 is about 305.8335061924.

The spelling of 28605872 in words is "twenty-eight million, six hundred five thousand, eight hundred seventy-two".