22029920 has 48 divisors (see below), whose sum is σ = 56781648. Its totient is φ = 8010240.

The previous prime is 22029913. The next prime is 22029923. The reversal of 22029920 is 2992022.

It is a self number, because there is not a number n which added to its sum of digits gives 22029920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22029923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4499 + ... + 8018.

It is an arithmetic number, because the mean of its divisors is an integer number (1182951).

Almost surely, 2^22029920 is an apocalyptic number.

22029920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22029920 is an abundant number, since it is smaller than the sum of its proper divisors (34751728).

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

22029920 is a wasteful number, since it uses less digits than its factorization.

22029920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12543 (or 12535 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 22029920 is about 4693.6041588528. The cubic root of 22029920 is about 280.3309013070.

The spelling of 22029920 in words is "twenty-two million, twenty-nine thousand, nine hundred twenty".