27901680 has 40 divisors (see below), whose sum is σ = 86495952. Its totient is φ = 7440384.

The previous prime is 27901673. The next prime is 27901703. The reversal of 27901680 is 8610972.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57889 + ... + 58368.

Almost surely, 2^27901680 is an apocalyptic number.

27901680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27901680 is an abundant number, since it is smaller than the sum of its proper divisors (58594272).

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

27901680 is a wasteful number, since it uses less digits than its factorization.

27901680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116273 (or 116267 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 27901680 is about 5282.2040854174. The cubic root of 27901680 is about 303.3030548478.

The spelling of 27901680 in words is "twenty-seven million, nine hundred one thousand, six hundred eighty".