27220923 has 6 divisors (see below), whose sum is σ = 39319124. Its totient is φ = 18147276.

The previous prime is 27220877. The next prime is 27220931. The reversal of 27220923 is 32902272.

It is not a de Polignac number, because 27220923 - 2⁹ = 27220411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27220223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1512265 + ... + 1512282.

Almost surely, 2^27220923 is an apocalyptic number.

27220923 is a deficient number, since it is larger than the sum of its proper divisors (12098201).

27220923 is a wasteful number, since it uses less digits than its factorization.

27220923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024553 (or 3024550 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 27220923 is about 5217.3674396193. The cubic root of 27220923 is about 300.8160117370.

The spelling of 27220923 in words is "twenty-seven million, two hundred twenty thousand, nine hundred twenty-three".