22271690 has 32 divisors (see below), whose sum is σ = 46275840. Its totient is φ = 7559424.

The previous prime is 22271687. The next prime is 22271699. The reversal of 22271690 is 9617222.

It is a super-2 number, since 2×22271690² = 992056350912200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22271699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5666 + ... + 8754.

It is an arithmetic number, because the mean of its divisors is an integer number (1446120).

Almost surely, 2^22271690 is an apocalyptic number.

22271690 is an abundant number, since it is smaller than the sum of its proper divisors (24004150).

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

22271690 is a wasteful number, since it uses less digits than its factorization.

22271690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 22271690 is about 4719.2891413856. The cubic root of 22271690 is about 281.3526808618.

The spelling of 22271690 in words is "twenty-two million, two hundred seventy-one thousand, six hundred ninety".