27982915 has 24 divisors (see below), whose sum is σ = 36484560. Its totient is φ = 20585664.

The previous prime is 27982909. The next prime is 27982949. The reversal of 27982915 is 51928972.

It is not a de Polignac number, because 27982915 - 2⁹ = 27982403 is a prime.

Its product of digits (90720) is a multiple of the sum of its prime divisors (480).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66576 + ... + 66994.

It is an arithmetic number, because the mean of its divisors is an integer number (1520190).

Almost surely, 2^27982915 is an apocalyptic number.

27982915 is a deficient number, since it is larger than the sum of its proper divisors (8501645).

27982915 is a wasteful number, since it uses less digits than its factorization.

27982915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 480 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 27982915 is about 5289.8879950335. The cubic root of 27982915 is about 303.5971225707.

The spelling of 27982915 in words is "twenty-seven million, nine hundred eighty-two thousand, nine hundred fifteen".