27796640 has 24 divisors (see below), whose sum is σ = 65669940. Its totient is φ = 11118592.

The previous prime is 27796633. The next prime is 27796651. The reversal of 27796640 is 4669772.

It can be written as a sum of positive squares in 2 ways, for example, as 25120144 + 2676496 = 5012^2 + 1636^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86705 + ... + 87024.

Almost surely, 2^27796640 is an apocalyptic number.

27796640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27796640 is an abundant number, since it is smaller than the sum of its proper divisors (37873300).

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

27796640 is a wasteful number, since it uses less digits than its factorization.

27796640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173744 (or 173736 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 27796640 is about 5272.2518907958. The cubic root of 27796640 is about 302.9219664934.

The spelling of 27796640 in words is "twenty-seven million, seven hundred ninety-six thousand, six hundred forty".