22135520 has 48 divisors (see below), whose sum is σ = 57053808. Its totient is φ = 8048640.

The previous prime is 22135517. The next prime is 22135537. The reversal of 22135520 is 2553122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22135492 and 22135501.

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, 4529 + ... + 8048.

It is an arithmetic number, because the mean of its divisors is an integer number (1188621).

Almost surely, 2^22135520 is an apocalyptic number.

22135520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22135520 is an abundant number, since it is smaller than the sum of its proper divisors (34918288).

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

22135520 is a wasteful number, since it uses less digits than its factorization.

22135520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12603 (or 12595 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 22135520 is about 4704.8400610435. The cubic root of 22135520 is about 280.7781077783.

Adding to 22135520 its reverse (2553122), we get a palindrome (24688642).

The spelling of 22135520 in words is "twenty-two million, one hundred thirty-five thousand, five hundred twenty".