22270236 has 12 divisors (see below), whose sum is σ = 51963912. Its totient is φ = 7423408.

The previous prime is 22270219. The next prime is 22270247. The reversal of 22270236 is 63207222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×22270236² = 991926822991392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927915 + ... + 927938.

It is an arithmetic number, because the mean of its divisors is an integer number (4330326).

Almost surely, 2^22270236 is an apocalyptic number.

It is an amenable number.

22270236 is an abundant number, since it is smaller than the sum of its proper divisors (29693676).

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

22270236 is a wasteful number, since it uses less digits than its factorization.

22270236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855860 (or 1855858 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 22270236 is about 4719.1350902469. The cubic root of 22270236 is about 281.3465580560.

Adding to 22270236 its reverse (63207222), we get a palindrome (85477458).

The spelling of 22270236 in words is "twenty-two million, two hundred seventy thousand, two hundred thirty-six".