27908972 has 24 divisors (see below), whose sum is σ = 60112416. Its totient is φ = 11040768.

The previous prime is 27908953. The next prime is 27908977. The reversal of 27908972 is 27980972.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (27908977) 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, 37973 + ... + 38700.

It is an arithmetic number, because the mean of its divisors is an integer number (2504684).

Almost surely, 2^27908972 is an apocalyptic number.

It is an amenable number.

27908972 is an abundant number, since it is smaller than the sum of its proper divisors (32203444).

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

27908972 is a wasteful number, since it uses less digits than its factorization.

27908972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76697 (or 76695 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 27908972 is about 5282.8942824933. The cubic root of 27908972 is about 303.3294749204.

The spelling of 27908972 in words is "twenty-seven million, nine hundred eight thousand, nine hundred seventy-two".