27899372 has 12 divisors (see below), whose sum is σ = 51393720. Its totient is φ = 13215456.

The previous prime is 27899323. The next prime is 27899381. The reversal of 27899372 is 27399872.

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, 183473 + ... + 183624.

It is an arithmetic number, because the mean of its divisors is an integer number (4282810).

Almost surely, 2^27899372 is an apocalyptic number.

It is an amenable number.

27899372 is a deficient number, since it is larger than the sum of its proper divisors (23494348).

27899372 is a wasteful number, since it uses less digits than its factorization.

27899372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367120 (or 367118 counting only the distinct ones).

The product of its digits is 381024, while the sum is 47.

The square root of 27899372 is about 5281.9856114912. The cubic root of 27899372 is about 303.2946916387.

Subtracting from 27899372 its reverse (27399872), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 27899372 in words is "twenty-seven million, eight hundred ninety-nine thousand, three hundred seventy-two".