28616572 has 12 divisors (see below), whose sum is σ = 50522976. Its totient is φ = 14181440.

The previous prime is 28616569. The next prime is 28616573. The reversal of 28616572 is 27561682.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28616573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31204 + ... + 32107.

It is an arithmetic number, because the mean of its divisors is an integer number (4210248).

Almost surely, 2^28616572 is an apocalyptic number.

It is an amenable number.

28616572 is a deficient number, since it is larger than the sum of its proper divisors (21906404).

28616572 is a wasteful number, since it uses less digits than its factorization.

28616572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63428 (or 63426 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 28616572 is about 5349.4459526198. The cubic root of 28616572 is about 305.8716336857.

The spelling of 28616572 in words is "twenty-eight million, six hundred sixteen thousand, five hundred seventy-two".