27620457 has 8 divisors (see below), whose sum is σ = 36859200. Its totient is φ = 18397680.

The previous prime is 27620449. The next prime is 27620497. The reversal of 27620457 is 75402672.

27620457 is nontrivially palindromic in base 8.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27620457 - 2³ = 27620449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27620407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907 + ... + 7487.

It is an arithmetic number, because the mean of its divisors is an integer number (4607400).

Almost surely, 2^27620457 is an apocalyptic number.

It is an amenable number.

27620457 is a deficient number, since it is larger than the sum of its proper divisors (9238743).

27620457 is a wasteful number, since it uses less digits than its factorization.

27620457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7983.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 27620457 is about 5255.5168156900. The cubic root of 27620457 is about 302.2806077176.

The spelling of 27620457 in words is "twenty-seven million, six hundred twenty thousand, four hundred fifty-seven".