27028290 has 64 divisors (see below), whose sum is σ = 68636160. Its totient is φ = 6800640.

The previous prime is 27028277. The next prime is 27028291. The reversal of 27028290 is 9282072.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27028291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40560 + ... + 41220.

It is an arithmetic number, because the mean of its divisors is an integer number (1072440).

Almost surely, 2^27028290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27028290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34318080).

27028290 is an abundant number, since it is smaller than the sum of its proper divisors (41607870).

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

27028290 is a wasteful number, since it uses less digits than its factorization.

27028290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 27028290 is about 5198.8739165323. The cubic root of 27028290 is about 300.1047412045.

The spelling of 27028290 in words is "twenty-seven million, twenty-eight thousand, two hundred ninety".