27931192 has 16 divisors (see below), whose sum is σ = 52452000. Its totient is φ = 13944000.

The previous prime is 27931171. The next prime is 27931193. The reversal of 27931192 is 29113972.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27931193) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3684 + ... + 8332.

It is an arithmetic number, because the mean of its divisors is an integer number (3278250).

Almost surely, 2^27931192 is an apocalyptic number.

It is an amenable number.

27931192 is a deficient number, since it is larger than the sum of its proper divisors (24520808).

27931192 is a wasteful number, since it uses less digits than its factorization.

27931192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406 (or 5402 counting only the distinct ones).

The product of its digits is 6804, while the sum is 34.

The square root of 27931192 is about 5284.9968779556. The cubic root of 27931192 is about 303.4099531387.

The spelling of 27931192 in words is "twenty-seven million, nine hundred thirty-one thousand, one hundred ninety-two".