27097830 has 96 divisors (see below), whose sum is σ = 75816000. Its totient is φ = 6690816.

The previous prime is 27097817. The next prime is 27097831. The reversal of 27097830 is 3879072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27097831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136071 + ... + 136269.

It is an arithmetic number, because the mean of its divisors is an integer number (789750).

Almost surely, 2^27097830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27097830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37908000).

27097830 is an abundant number, since it is smaller than the sum of its proper divisors (48718170).

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

27097830 is a wasteful number, since it uses less digits than its factorization.

27097830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 27097830 is about 5205.5576070196. The cubic root of 27097830 is about 300.3618965940.

The spelling of 27097830 in words is "twenty-seven million, ninety-seven thousand, eight hundred thirty".