22991270 has 16 divisors (see below), whose sum is σ = 41478048. Its totient is φ = 9175680.

The previous prime is 22991233. The next prime is 22991299. The reversal of 22991270 is 7219922.

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, 2510 + ... + 7230.

It is an arithmetic number, because the mean of its divisors is an integer number (2592378).

Almost surely, 2^22991270 is an apocalyptic number.

22991270 is a deficient number, since it is larger than the sum of its proper divisors (18486778).

22991270 is a wasteful number, since it uses less digits than its factorization.

22991270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 22991270 is about 4794.9212715122. The cubic root of 22991270 is about 284.3507123322.

The spelling of 22991270 in words is "twenty-two million, nine hundred ninety-one thousand, two hundred seventy".