28813384 has 32 divisors (see below), whose sum is σ = 56125440. Its totient is φ = 13852800.

The previous prime is 28813361. The next prime is 28813391. The reversal of 28813384 is 48331882.

It is a super-2 number, since 2×28813384² = 1660422195062912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55044 + ... + 55564.

It is an arithmetic number, because the mean of its divisors is an integer number (1753920).

Almost surely, 2^28813384 is an apocalyptic number.

It is an amenable number.

28813384 is a deficient number, since it is larger than the sum of its proper divisors (27312056).

28813384 is a wasteful number, since it uses less digits than its factorization.

28813384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 777 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 28813384 is about 5367.8099817337. The cubic root of 28813384 is about 306.5712484069.

The spelling of 28813384 in words is "twenty-eight million, eight hundred thirteen thousand, three hundred eighty-four".