22000520 has 32 divisors (see below), whose sum is σ = 50656320. Its totient is φ = 8594880.

The previous prime is 22000513. The next prime is 22000529. The reversal of 22000520 is 2500022.

It is not an unprimeable number, because it can be changed into a prime (22000529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4676 + ... + 8115.

It is an arithmetic number, because the mean of its divisors is an integer number (1583010).

Almost surely, 2^22000520 is an apocalyptic number.

22000520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22000520 is an abundant number, since it is smaller than the sum of its proper divisors (28655800).

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

22000520 is a wasteful number, since it uses less digits than its factorization.

22000520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12845 (or 12841 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 22000520 is about 4690.4711916821. The cubic root of 22000520 is about 280.2061407155.

Adding to 22000520 its reverse (2500022), we get a palindrome (24500542).

The spelling of 22000520 in words is "twenty-two million, five hundred twenty", and thus it is an aban number.