27904031 has 8 divisors (see below), whose sum is σ = 29053584. Its totient is φ = 26775360.

The previous prime is 27904013. The next prime is 27904043. The reversal of 27904031 is 13040972.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27904031 is a prime.

It is a super-2 number, since 2×27904031² = 1557269892097922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27904001) 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, 2465 + ... + 7866.

It is an arithmetic number, because the mean of its divisors is an integer number (3631698).

Almost surely, 2^27904031 is an apocalyptic number.

27904031 is a deficient number, since it is larger than the sum of its proper divisors (1149553).

27904031 is a wasteful number, since it uses less digits than its factorization.

27904031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10441.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 27904031 is about 5282.4266204085. The cubic root of 27904031 is about 303.3115733965.

The spelling of 27904031 in words is "twenty-seven million, nine hundred four thousand, thirty-one".