27920340 has 72 divisors (see below), whose sum is σ = 96794880. Its totient is φ = 6381504.

The previous prime is 27920309. The next prime is 27920377. The reversal of 27920340 is 4302972.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9820 + ... + 12339.

Almost surely, 2^27920340 is an apocalyptic number.

27920340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27920340 is an abundant number, since it is smaller than the sum of its proper divisors (68874540).

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

27920340 is a wasteful number, since it uses less digits than its factorization.

27920340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22181 (or 22176 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 27920340 is about 5283.9700983257. The cubic root of 27920340 is about 303.3706538095.

The spelling of 27920340 in words is "twenty-seven million, nine hundred twenty thousand, three hundred forty".