27940280 has 16 divisors (see below), whose sum is σ = 62865720. Its totient is φ = 11176096.

The previous prime is 27940277. The next prime is 27940301. The reversal of 27940280 is 8204972.

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 3 ways as a sum of consecutive naturals, for example, 349214 + ... + 349293.

Almost surely, 2^27940280 is an apocalyptic number.

27940280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27940280 is an abundant number, since it is smaller than the sum of its proper divisors (34925440).

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

27940280 is a wasteful number, since it uses less digits than its factorization.

27940280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698518 (or 698514 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 27940280 is about 5285.8566004007. The cubic root of 27940280 is about 303.4428565041.

The spelling of 27940280 in words is "twenty-seven million, nine hundred forty thousand, two hundred eighty".