27278990 has 16 divisors (see below), whose sum is σ = 50429952. Its totient is φ = 10616544.

The previous prime is 27278987. The next prime is 27279001. The reversal of 27278990 is 9987272.

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, 36494 + ... + 37233.

It is an arithmetic number, because the mean of its divisors is an integer number (3151872).

Almost surely, 2^27278990 is an apocalyptic number.

27278990 is a deficient number, since it is larger than the sum of its proper divisors (23150962).

27278990 is a wasteful number, since it uses less digits than its factorization.

27278990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73771.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 27278990 is about 5222.9292547382. The cubic root of 27278990 is about 301.0297575831.

The spelling of 27278990 in words is "twenty-seven million, two hundred seventy-eight thousand, nine hundred ninety".