22136870 has 16 divisors (see below), whose sum is σ = 45538848. Its totient is φ = 7589760.

The previous prime is 22136869. The next prime is 22136893. The reversal of 22136870 is 7863122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158051 + ... + 158190.

It is an arithmetic number, because the mean of its divisors is an integer number (2846178).

Almost surely, 2^22136870 is an apocalyptic number.

22136870 is an abundant number, since it is smaller than the sum of its proper divisors (23401978).

22136870 is a wasteful number, since it uses less digits than its factorization.

22136870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316255.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 22136870 is about 4704.9835281327. The cubic root of 22136870 is about 280.7838156894.

Adding to 22136870 its reverse (7863122), we get a palindrome (29999992).

The spelling of 22136870 in words is "twenty-two million, one hundred thirty-six thousand, eight hundred seventy".