27697628 has 24 divisors (see below), whose sum is σ = 55770624. Its totient is φ = 11790000.

The previous prime is 27697619. The next prime is 27697643. The reversal of 27697628 is 82679672.

It is a congruent number.

It is an unprimeable number.

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, 953 + ... + 7503.

It is an arithmetic number, because the mean of its divisors is an integer number (2323776).

Almost surely, 2^27697628 is an apocalyptic number.

27697628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27697628 is an abundant number, since it is smaller than the sum of its proper divisors (28072996).

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

27697628 is a wasteful number, since it uses less digits than its factorization.

27697628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6713 (or 6711 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 27697628 is about 5262.8535985718. The cubic root of 27697628 is about 302.5618679095.

The spelling of 27697628 in words is "twenty-seven million, six hundred ninety-seven thousand, six hundred twenty-eight".