27490431 has 4 divisors (see below), whose sum is σ = 36653912. Its totient is φ = 18326952.

The previous prime is 27490429. The next prime is 27490433. The reversal of 27490431 is 13409472.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (27490429) and next prime (27490433).

It is not a de Polignac number, because 27490431 - 2¹ = 27490429 is a prime.

It is a super-2 number, since 2×27490431² = 1511447593131522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27490433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4581736 + ... + 4581741.

It is an arithmetic number, because the mean of its divisors is an integer number (9163478).

Almost surely, 2^27490431 is an apocalyptic number.

27490431 is a deficient number, since it is larger than the sum of its proper divisors (9163481).

27490431 is an equidigital number, since it uses as much as digits as its factorization.

27490431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9163480.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 27490431 is about 5243.1317931175. The cubic root of 27490431 is about 301.8055229348.

The spelling of 27490431 in words is "twenty-seven million, four hundred ninety thousand, four hundred thirty-one".