22380920 has 16 divisors (see below), whose sum is σ = 50357160. Its totient is φ = 8952352.

The previous prime is 22380913. The next prime is 22380923. The reversal of 22380920 is 2908322.

It is a self number, because there is not a number n which added to its sum of digits gives 22380920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22380923) 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 3 ways as a sum of consecutive naturals, for example, 279722 + ... + 279801.

Almost surely, 2^22380920 is an apocalyptic number.

22380920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22380920 is an abundant number, since it is smaller than the sum of its proper divisors (27976240).

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

22380920 is a wasteful number, since it uses less digits than its factorization.

22380920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559534 (or 559530 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 22380920 is about 4730.8477041647. The cubic root of 22380920 is about 281.8118893685.

The spelling of 22380920 in words is "twenty-two million, three hundred eighty thousand, nine hundred twenty".