28877584 has 20 divisors (see below), whose sum is σ = 56189980. Its totient is φ = 14376960.

The previous prime is 28877573. The next prime is 28877593. The reversal of 28877584 is 48577882.

It can be written as a sum of positive squares in 2 ways, for example, as 18249984 + 10627600 = 4272^2 + 3260^2 .

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, 112 + ... + 7600.

It is an arithmetic number, because the mean of its divisors is an integer number (2809499).

Almost surely, 2^28877584 is an apocalyptic number.

It is an amenable number.

28877584 is a deficient number, since it is larger than the sum of its proper divisors (27312396).

28877584 is a wasteful number, since it uses less digits than its factorization.

28877584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7738 (or 7732 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 49.

The square root of 28877584 is about 5373.7867467922. The cubic root of 28877584 is about 306.7987731604.

The spelling of 28877584 in words is "twenty-eight million, eight hundred seventy-seven thousand, five hundred eighty-four".