27797660 has 48 divisors (see below), whose sum is σ = 65892960. Its totient is φ = 9757440.

The previous prime is 27797659. The next prime is 27797683. The reversal of 27797660 is 6679772.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4202 + ... + 8558.

It is an arithmetic number, because the mean of its divisors is an integer number (1372770).

Almost surely, 2^27797660 is an apocalyptic number.

27797660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27797660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32946480).

27797660 is an abundant number, since it is smaller than the sum of its proper divisors (38095300).

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

27797660 is a wasteful number, since it uses less digits than its factorization.

27797660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406 (or 4404 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 27797660 is about 5272.3486227677. The cubic root of 27797660 is about 302.9256716969.

The spelling of 27797660 in words is "twenty-seven million, seven hundred ninety-seven thousand, six hundred sixty".