27390428 has 12 divisors (see below), whose sum is σ = 51620520. Its totient is φ = 12641712.

The previous prime is 27390379. The next prime is 27390431. The reversal of 27390428 is 82409372.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263318 + ... + 263421.

It is an arithmetic number, because the mean of its divisors is an integer number (4301710).

Almost surely, 2^27390428 is an apocalyptic number.

It is an amenable number.

27390428 is a deficient number, since it is larger than the sum of its proper divisors (24230092).

27390428 is a wasteful number, since it uses less digits than its factorization.

27390428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526756 (or 526754 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 27390428 is about 5233.5865331530. The cubic root of 27390428 is about 301.4391150834.

The spelling of 27390428 in words is "twenty-seven million, three hundred ninety thousand, four hundred twenty-eight".