27161280 has 84 divisors (see below), whose sum is σ = 93433392. Its totient is φ = 7242240.

The previous prime is 27161249. The next prime is 27161327. The reversal of 27161280 is 8216172.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1836 + ... + 7595.

Almost surely, 2^27161280 is an apocalyptic number.

27161280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27161280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46716696).

27161280 is an abundant number, since it is smaller than the sum of its proper divisors (66272112).

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

27161280 is a wasteful number, since it uses less digits than its factorization.

27161280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9454 (or 9441 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 27161280 is about 5211.6484916003. The cubic root of 27161280 is about 300.5961479076.

The spelling of 27161280 in words is "twenty-seven million, one hundred sixty-one thousand, two hundred eighty".