27009690 has 32 divisors (see below), whose sum is σ = 65460096. Its totient is φ = 7131840.

The previous prime is 27009637. The next prime is 27009691. The reversal of 27009690 is 9690072.

It is a super-2 number, since 2×27009690² = 1459046707792200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27009691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281 + ... + 7460.

It is an arithmetic number, because the mean of its divisors is an integer number (2045628).

Almost surely, 2^27009690 is an apocalyptic number.

27009690 is an abundant number, since it is smaller than the sum of its proper divisors (38450406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27009690 is a wasteful number, since it uses less digits than its factorization.

27009690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 27009690 is about 5197.0847597475. The cubic root of 27009690 is about 300.0358845964.

The spelling of 27009690 in words is "twenty-seven million, nine thousand, six hundred ninety".