28958884 has 6 divisors (see below), whose sum is σ = 50678054. Its totient is φ = 14479440.

The previous prime is 28958879. The next prime is 28958893. The reversal of 28958884 is 48885982.

It can be written as a sum of positive squares in only one way, i.e., 22353984 + 6604900 = 4728^2 + 2570^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3619857 + ... + 3619864.

Almost surely, 2^28958884 is an apocalyptic number.

It is an amenable number.

28958884 is a deficient number, since it is larger than the sum of its proper divisors (21719170).

28958884 is a wasteful number, since it uses less digits than its factorization.

28958884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7239725 (or 7239723 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 52.

The square root of 28958884 is about 5381.3459282971. The cubic root of 28958884 is about 307.0864169078.

The spelling of 28958884 in words is "twenty-eight million, nine hundred fifty-eight thousand, eight hundred eighty-four".