27690864 has 40 divisors (see below), whose sum is σ = 71824272. Its totient is φ = 9192960.

The previous prime is 27690863. The next prime is 27690893. The reversal of 27690864 is 46809672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27690863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12462 + ... + 14514.

Almost surely, 2^27690864 is an apocalyptic number.

27690864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27690864 is an abundant number, since it is smaller than the sum of its proper divisors (44133408).

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

27690864 is a wasteful number, since it uses less digits than its factorization.

27690864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345 (or 2339 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 27690864 is about 5262.2109421801. The cubic root of 27690864 is about 302.5372364971.

The spelling of 27690864 in words is "twenty-seven million, six hundred ninety thousand, eight hundred sixty-four".