27231988 has 24 divisors (see below), whose sum is σ = 55625472. Its totient is φ = 11421984.

The previous prime is 27231973. The next prime is 27232001. The reversal of 27231988 is 88913272.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 27231988.

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, 9031 + ... + 11662.

It is an arithmetic number, because the mean of its divisors is an integer number (2317728).

Almost surely, 2^27231988 is an apocalyptic number.

27231988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27231988 is an abundant number, since it is smaller than the sum of its proper divisors (28393484).

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

27231988 is a wasteful number, since it uses less digits than its factorization.

27231988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20751 (or 20749 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 27231988 is about 5218.4277325647. The cubic root of 27231988 is about 300.8567656609.

The spelling of 27231988 in words is "twenty-seven million, two hundred thirty-one thousand, nine hundred eighty-eight".