27311890 has 8 divisors (see below), whose sum is σ = 49161420. Its totient is φ = 10924752.

The previous prime is 27311887. The next prime is 27311891. The reversal of 27311890 is 9811372.

It can be written as a sum of positive squares in 2 ways, for example, as 24039409 + 3272481 = 4903^2 + 1809^2 .

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

It is not an unprimeable number, because it can be changed into a prime (27311891) 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, 1365585 + ... + 1365604.

Almost surely, 2^27311890 is an apocalyptic number.

27311890 is a deficient number, since it is larger than the sum of its proper divisors (21849530).

27311890 is a wasteful number, since it uses less digits than its factorization.

27311890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731196.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 27311890 is about 5226.0778792513. The cubic root of 27311890 is about 301.1507285837.

The spelling of 27311890 in words is "twenty-seven million, three hundred eleven thousand, eight hundred ninety".