27990838 has 16 divisors (see below), whose sum is σ = 44418240. Its totient is φ = 13192200.

The previous prime is 27990821. The next prime is 27990841. The reversal of 27990838 is 83809972.

It is a congruent number.

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, 6273 + ... + 9763.

It is an arithmetic number, because the mean of its divisors is an integer number (2776140).

Almost surely, 2^27990838 is an apocalyptic number.

27990838 is a deficient number, since it is larger than the sum of its proper divisors (16427402).

27990838 is a wasteful number, since it uses less digits than its factorization.

27990838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 27990838 is about 5290.6368236726. The cubic root of 27990838 is about 303.6257730647.

The spelling of 27990838 in words is "twenty-seven million, nine hundred ninety thousand, eight hundred thirty-eight".