27899131 has 16 divisors (see below), whose sum is σ = 31822560. Its totient is φ = 24272640.

The previous prime is 27899093. The next prime is 27899171. The reversal of 27899131 is 13199872.

It is not a de Polignac number, because 27899131 - 2¹¹ = 27897083 is a prime.

It is a super-2 number, since 2×27899131² = 1556723021110322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27899171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15351 + ... + 17071.

It is an arithmetic number, because the mean of its divisors is an integer number (1988910).

Almost surely, 2^27899131 is an apocalyptic number.

27899131 is a deficient number, since it is larger than the sum of its proper divisors (3923429).

27899131 is a wasteful number, since it uses less digits than its factorization.

27899131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806.

The product of its digits is 27216, while the sum is 40.

The square root of 27899131 is about 5281.9627980515. The cubic root of 27899131 is about 303.2938183307.

The spelling of 27899131 in words is "twenty-seven million, eight hundred ninety-nine thousand, one hundred thirty-one".