27342390 has 16 divisors (see below), whose sum is σ = 65621808. Its totient is φ = 7291296.

The previous prime is 27342379. The next prime is 27342407. The reversal of 27342390 is 9324372.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 911413 = 27342390 / (2 + 7 + 3 + 4 + 2 + 3 + 9 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455677 + ... + 455736.

It is an arithmetic number, because the mean of its divisors is an integer number (4101363).

Almost surely, 2^27342390 is an apocalyptic number.

27342390 is an abundant number, since it is smaller than the sum of its proper divisors (38279418).

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

27342390 is a wasteful number, since it uses less digits than its factorization.

27342390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911423.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 27342390 is about 5228.9951233483. The cubic root of 27342390 is about 301.2627882062.

The spelling of 27342390 in words is "twenty-seven million, three hundred forty-two thousand, three hundred ninety".