27351990 has 48 divisors (see below), whose sum is σ = 71705088. Its totient is φ = 7233408.

The previous prime is 27351983. The next prime is 27352019. The reversal of 27351990 is 9915372.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10234 + ... + 12626.

It is an arithmetic number, because the mean of its divisors is an integer number (1493856).

Almost surely, 2^27351990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27351990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35852544).

27351990 is an abundant number, since it is smaller than the sum of its proper divisors (44353098).

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

27351990 is a wasteful number, since it uses less digits than its factorization.

27351990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533 (or 2530 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 27351990 is about 5229.9130011885. The cubic root of 27351990 is about 301.2980421879.

The spelling of 27351990 in words is "twenty-seven million, three hundred fifty-one thousand, nine hundred ninety".