22163650 has 12 divisors (see below), whose sum is σ = 41224482. Its totient is φ = 8865440.

The previous prime is 22163641. The next prime is 22163663. The reversal of 22163650 is 5636122.

It can be written as a sum of positive squares in 3 ways, for example, as 10556001 + 11607649 = 3249^2 + 3407^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221587 + ... + 221686.

Almost surely, 2^22163650 is an apocalyptic number.

22163650 is a deficient number, since it is larger than the sum of its proper divisors (19060832).

22163650 is a wasteful number, since it uses less digits than its factorization.

22163650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443285 (or 443280 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 22163650 is about 4707.8285865142. The cubic root of 22163650 is about 280.8969958037.

Adding to 22163650 its reverse (5636122), we get a palindrome (27799772).

The spelling of 22163650 in words is "twenty-two million, one hundred sixty-three thousand, six hundred fifty".