20222570 has 32 divisors (see below), whose sum is σ = 38005200. Its totient is φ = 7737856.

The previous prime is 20222569. The next prime is 20222581. The reversal of 20222570 is 7522202.

It can be written as a sum of positive squares in 8 ways, for example, as 13184161 + 7038409 = 3631^2 + 2653^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39476 + ... + 39984.

Almost surely, 2^20222570 is an apocalyptic number.

20222570 is a deficient number, since it is larger than the sum of its proper divisors (17782630).

20222570 is a wasteful number, since it uses less digits than its factorization.

20222570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 20222570 is about 4496.9511894171. The cubic root of 20222570 is about 272.4449626524. Note that the first 3 decimals are identical.

Adding to 20222570 its reverse (7522202), we get a palindrome (27744772).

The spelling of 20222570 in words is "twenty million, two hundred twenty-two thousand, five hundred seventy".