22722170 has 8 divisors (see below), whose sum is σ = 40899924. Its totient is φ = 9088864.

The previous prime is 22722169. The next prime is 22722211. The reversal of 22722170 is 7122722.

It can be written as a sum of positive squares in 2 ways, for example, as 21279769 + 1442401 = 4613^2 + 1201^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1136099 + ... + 1136118.

Almost surely, 2^22722170 is an apocalyptic number.

22722170 is a deficient number, since it is larger than the sum of its proper divisors (18177754).

22722170 is a wasteful number, since it uses less digits than its factorization.

22722170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272224.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 22722170 is about 4766.7777376337. Note that the first 4 decimals coincide. The cubic root of 22722170 is about 283.2369668434.

Adding to 22722170 its reverse (7122722), we get a palindrome (29844892).

The spelling of 22722170 in words is "twenty-two million, seven hundred twenty-two thousand, one hundred seventy".