27522990 has 80 divisors (see below), whose sum is σ = 80760240. Its totient is φ = 6670080.

The previous prime is 27522961. The next prime is 27523003. The reversal of 27522990 is 9922572.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7366 + ... + 10454.

It is an arithmetic number, because the mean of its divisors is an integer number (1009503).

Almost surely, 2^27522990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27522990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40380120).

27522990 is an abundant number, since it is smaller than the sum of its proper divisors (53237250).

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

27522990 is a wasteful number, since it uses less digits than its factorization.

27522990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119 (or 3110 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 27522990 is about 5246.2357934046. The cubic root of 27522990 is about 301.9246263076.

The spelling of 27522990 in words is "twenty-seven million, five hundred twenty-two thousand, nine hundred ninety".