27225990 has 128 divisors (see below), whose sum is σ = 80870400. Its totient is φ = 6462720.

The previous prime is 27225977. The next prime is 27226021. The reversal of 27225990 is 9952272.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 264279 + ... + 264381.

It is an arithmetic number, because the mean of its divisors is an integer number (631800).

Almost surely, 2^27225990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27225990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40435200).

27225990 is an abundant number, since it is smaller than the sum of its proper divisors (53644410).

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

27225990 is a wasteful number, since it uses less digits than its factorization.

27225990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 213 counting only the distinct ones).

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

The square root of 27225990 is about 5217.8530067452. The cubic root of 27225990 is about 300.8346755686.

It can be divided in two parts, 272 and 25990, that added together give a palindrome (26262).

The spelling of 27225990 in words is "twenty-seven million, two hundred twenty-five thousand, nine hundred ninety".