22145356 has 12 divisors (see below), whose sum is σ = 41034168. Its totient is φ = 10421312.

The previous prime is 22145327. The next prime is 22145363. The reversal of 22145356 is 65354122.

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, 162766 + ... + 162901.

It is an arithmetic number, because the mean of its divisors is an integer number (3419514).

Almost surely, 2^22145356 is an apocalyptic number.

It is an amenable number.

22145356 is a deficient number, since it is larger than the sum of its proper divisors (18888812).

22145356 is a wasteful number, since it uses less digits than its factorization.

22145356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325688 (or 325686 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 22145356 is about 4705.8852514697. The cubic root of 22145356 is about 280.8196898826.

Adding to 22145356 its reverse (65354122), we get a palindrome (87499478).

The spelling of 22145356 in words is "twenty-two million, one hundred forty-five thousand, three hundred fifty-six".