27289992 has 32 divisors (see below), whose sum is σ = 68359680. Its totient is φ = 9078720.

The previous prime is 27289991. The next prime is 27290017. The reversal of 27289992 is 29998272.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (27289991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17817 + ... + 19287.

It is an arithmetic number, because the mean of its divisors is an integer number (2136240).

Almost surely, 2^27289992 is an apocalyptic number.

It is an amenable number.

27289992 is an abundant number, since it is smaller than the sum of its proper divisors (41069688).

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

27289992 is a wasteful number, since it uses less digits than its factorization.

27289992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253 (or 2249 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 27289992 is about 5223.9823889443. The cubic root of 27289992 is about 301.0702219874.

It can be divided in two parts, 2728 and 9992, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 27289992 in words is "twenty-seven million, two hundred eighty-nine thousand, nine hundred ninety-two".