27090390 has 32 divisors (see below), whose sum is σ = 68440320. Its totient is φ = 6843744.

The previous prime is 27090383. The next prime is 27090391. The reversal of 27090390 is 9309072.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27090391) 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, 23194 + ... + 24333.

It is an arithmetic number, because the mean of its divisors is an integer number (2138760).

Almost surely, 2^27090390 is an apocalyptic number.

27090390 is an abundant number, since it is smaller than the sum of its proper divisors (41349930).

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

27090390 is a wasteful number, since it uses less digits than its factorization.

27090390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47556.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 27090390 is about 5204.8429371116. The cubic root of 27090390 is about 300.3344048839.

The spelling of 27090390 in words is "twenty-seven million, ninety thousand, three hundred ninety".