27992520 has 64 divisors (see below), whose sum is σ = 93312000. Its totient is φ = 7464384.

The previous prime is 27992519. The next prime is 27992539. The reversal of 27992520 is 2529972.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11880 + ... + 14039.

It is an arithmetic number, because the mean of its divisors is an integer number (1458000).

Almost surely, 2^27992520 is an apocalyptic number.

27992520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27992520 is an abundant number, since it is smaller than the sum of its proper divisors (65319480).

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

27992520 is a wasteful number, since it uses less digits than its factorization.

27992520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25939 (or 25929 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 27992520 is about 5290.7957813546. The cubic root of 27992520 is about 303.6318546776.

The spelling of 27992520 in words is "twenty-seven million, nine hundred ninety-two thousand, five hundred twenty".