27121080 has 128 divisors (see below), whose sum is σ = 94348800. Its totient is φ = 6108672.

The previous prime is 27121067. The next prime is 27121093. The reversal of 27121080 is 8012172.

It is an interprime number because it is at equal distance from previous prime (27121067) and next prime (27121093).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69526 + ... + 69914.

It is an arithmetic number, because the mean of its divisors is an integer number (737100).

Almost surely, 2^27121080 is an apocalyptic number.

27121080 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 27121080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47174400).

27121080 is an abundant number, since it is smaller than the sum of its proper divisors (67227720).

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

27121080 is a wasteful number, since it uses less digits than its factorization.

27121080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 27121080 is about 5207.7903183596. The cubic root of 27121080 is about 300.4477757681.

The spelling of 27121080 in words is "twenty-seven million, one hundred twenty-one thousand, eighty".