22152810 has 32 divisors (see below), whose sum is σ = 55002240. Its totient is φ = 5703488.

The previous prime is 22152797. The next prime is 22152829. The reversal of 22152810 is 1825122.

It is a happy number.

It is a super-2 number, since 2×22152810² = 981493981792200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11862 + ... + 13601.

It is an arithmetic number, because the mean of its divisors is an integer number (1718820).

Almost surely, 2^22152810 is an apocalyptic number.

22152810 is an abundant number, since it is smaller than the sum of its proper divisors (32849430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22152810 is a wasteful number, since it uses less digits than its factorization.

22152810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25502.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 22152810 is about 4706.6771718485. The cubic root of 22152810 is about 280.8511937813.

Adding to 22152810 its reverse (1825122), we get a palindrome (23977932).

The spelling of 22152810 in words is "twenty-two million, one hundred fifty-two thousand, eight hundred ten".