27090920 has 32 divisors (see below), whose sum is σ = 61149600. Its totient is φ = 10801728.

The previous prime is 27090881. The next prime is 27090991. The reversal of 27090920 is 2909072.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14267 + ... + 16053.

It is an arithmetic number, because the mean of its divisors is an integer number (1910925).

Almost surely, 2^27090920 is an apocalyptic number.

27090920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27090920 is an abundant number, since it is smaller than the sum of its proper divisors (34058680).

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

27090920 is a wasteful number, since it uses less digits than its factorization.

27090920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177 (or 2173 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 27090920 is about 5204.8938509829. The cubic root of 27090920 is about 300.3363634652.

Adding to 27090920 its reverse (2909072), we get a palindrome (29999992).

The spelling of 27090920 in words is "twenty-seven million, ninety thousand, nine hundred twenty".