27998404 has 24 divisors (see below), whose sum is σ = 57142400. Its totient is φ = 11998728.

The previous prime is 27998393. The next prime is 27998423. The reversal of 27998404 is 40489972.

27998404 = 97² + 98² + ... + 439².

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, 8832 + ... + 11575.

Almost surely, 2^27998404 is an apocalyptic number.

It is an amenable number.

27998404 is an abundant number, since it is smaller than the sum of its proper divisors (29143996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27998404 is a wasteful number, since it uses less digits than its factorization.

27998404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20432 (or 20416 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 27998404 is about 5291.3518121554. The cubic root of 27998404 is about 303.6531275589.

The spelling of 27998404 in words is "twenty-seven million, nine hundred ninety-eight thousand, four hundred four".