27402997 has 16 divisors (see below), whose sum is σ = 31268160. Its totient is φ = 23853312.

The previous prime is 27402989. The next prime is 27403007. The reversal of 27402997 is 79920472.

It is not a de Polignac number, because 27402997 - 2³ = 27402989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27402097) 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, 12903 + ... + 14875.

It is an arithmetic number, because the mean of its divisors is an integer number (1954260).

Almost surely, 2^27402997 is an apocalyptic number.

It is an amenable number.

27402997 is a deficient number, since it is larger than the sum of its proper divisors (3865163).

27402997 is a wasteful number, since it uses less digits than its factorization.

27402997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 27402997 is about 5234.7871972030. The cubic root of 27402997 is about 301.4852164544.

The spelling of 27402997 in words is "twenty-seven million, four hundred two thousand, nine hundred ninety-seven".