22520136 has 32 divisors (see below), whose sum is σ = 58118400. Its totient is φ = 7264320.

The previous prime is 22520131. The next prime is 22520137. The reversal of 22520136 is 63102522.

It is not an unprimeable number, because it can be changed into a prime (22520131) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14391 + ... + 15878.

It is an arithmetic number, because the mean of its divisors is an integer number (1816200).

Almost surely, 2^22520136 is an apocalyptic number.

It is an amenable number.

22520136 is an abundant number, since it is smaller than the sum of its proper divisors (35598264).

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

22520136 is a wasteful number, since it uses less digits than its factorization.

22520136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30309 (or 30305 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 22520136 is about 4745.5385363518. The cubic root of 22520136 is about 282.3950000051.

Adding to 22520136 its reverse (63102522), we get a palindrome (85622658).

The spelling of 22520136 in words is "twenty-two million, five hundred twenty thousand, one hundred thirty-six".