28627924 has 18 divisors (see below), whose sum is σ = 54250350. Its totient is φ = 13212576.

The previous prime is 28627913. The next prime is 28627933. The reversal of 28627924 is 42972682.

It can be written as a sum of positive squares in 3 ways, for example, as 2617924 + 26010000 = 1618^2 + 5100^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20499 + ... + 21850.

Almost surely, 2^28627924 is an apocalyptic number.

It is an amenable number.

28627924 is a deficient number, since it is larger than the sum of its proper divisors (25622426).

28627924 is a wasteful number, since it uses less digits than its factorization.

28627924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42379 (or 42364 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 28627924 is about 5350.5068918748. The cubic root of 28627924 is about 305.9120740728.

The spelling of 28627924 in words is "twenty-eight million, six hundred twenty-seven thousand, nine hundred twenty-four".