27973880 has 32 divisors (see below), whose sum is σ = 68664240. Its totient is φ = 10172160.

The previous prime is 27973879. The next prime is 27973901. The reversal of 27973880 is 8837972.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 31349 + ... + 32228.

Almost surely, 2^27973880 is an apocalyptic number.

27973880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27973880 is an abundant number, since it is smaller than the sum of its proper divisors (40690360).

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

27973880 is a wasteful number, since it uses less digits than its factorization.

27973880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63599 (or 63595 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 27973880 is about 5289.0339382538. The cubic root of 27973880 is about 303.5644443541.

The spelling of 27973880 in words is "twenty-seven million, nine hundred seventy-three thousand, eight hundred eighty".