27290473 has 4 divisors (see below), whose sum is σ = 31189120. Its totient is φ = 23391828.

The previous prime is 27290467. The next prime is 27290521. The reversal of 27290473 is 37409272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27290473 - 2⁹ = 27289961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27290413) 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, 1949313 + ... + 1949326.

It is an arithmetic number, because the mean of its divisors is an integer number (7797280).

Almost surely, 2^27290473 is an apocalyptic number.

It is an amenable number.

27290473 is a deficient number, since it is larger than the sum of its proper divisors (3898647).

27290473 is an equidigital number, since it uses as much as digits as its factorization.

27290473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898646.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 27290473 is about 5224.0284264158. The cubic root of 27290473 is about 301.0719908157.

The spelling of 27290473 in words is "twenty-seven million, two hundred ninety thousand, four hundred seventy-three".