27021379 has 16 divisors (see below), whose sum is σ = 34076160. Its totient is φ = 20813760.

The previous prime is 27021377. The next prime is 27021383. The reversal of 27021379 is 97312072.

It is not a de Polignac number, because 27021379 - 2¹ = 27021377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27021379.

It is not an unprimeable number, because it can be changed into a prime (27021377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4882 + ... + 8824.

It is an arithmetic number, because the mean of its divisors is an integer number (2129760).

Almost surely, 2^27021379 is an apocalyptic number.

27021379 is a deficient number, since it is larger than the sum of its proper divisors (7054781).

27021379 is a wasteful number, since it uses less digits than its factorization.

27021379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 27021379 is about 5198.2092108725. The cubic root of 27021379 is about 300.0791605916.

The spelling of 27021379 in words is "twenty-seven million, twenty-one thousand, three hundred seventy-nine".