27312473 has 4 divisors (see below), whose sum is σ = 27442128. Its totient is φ = 27182820.

The previous prime is 27312463. The next prime is 27312479. The reversal of 27312473 is 37421372.

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 27312473 - 2¹⁸ = 27050329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27312479) 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, 64511 + ... + 64932.

It is an arithmetic number, because the mean of its divisors is an integer number (6860532).

Almost surely, 2^27312473 is an apocalyptic number.

It is an amenable number.

27312473 is a deficient number, since it is larger than the sum of its proper divisors (129655).

27312473 is a wasteful number, since it uses less digits than its factorization.

27312473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129654.

The product of its digits is 7056, while the sum is 29.

The square root of 27312473 is about 5226.1336569208. The cubic root of 27312473 is about 301.1528713577.

The spelling of 27312473 in words is "twenty-seven million, three hundred twelve thousand, four hundred seventy-three".