27022890 has 16 divisors (see below), whose sum is σ = 64855008. Its totient is φ = 7206096.

The previous prime is 27022889. The next prime is 27022901. The reversal of 27022890 is 9822072.

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: 900763 = 27022890 / (2 + 7 + 0 + 2 + 2 + 8 + 9 + 0).

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, 450352 + ... + 450411.

It is an arithmetic number, because the mean of its divisors is an integer number (4053438).

Almost surely, 2^27022890 is an apocalyptic number.

27022890 is an abundant number, since it is smaller than the sum of its proper divisors (37832118).

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

27022890 is a wasteful number, since it uses less digits than its factorization.

27022890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900773.

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

The square root of 27022890 is about 5198.3545473544. The cubic root of 27022890 is about 300.0847538315.

The spelling of 27022890 in words is "twenty-seven million, twenty-two thousand, eight hundred ninety".