22023420 has 48 divisors (see below), whose sum is σ = 64350720. Its totient is φ = 5617216.

The previous prime is 22023409. The next prime is 22023431. The reversal of 22023420 is 2432022.

It is an interprime number because it is at equal distance from previous prime (22023409) and next prime (22023431).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22023420.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6600 + ... + 9359.

It is an arithmetic number, because the mean of its divisors is an integer number (1340640).

Almost surely, 2^22023420 is an apocalyptic number.

22023420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22023420 is an abundant number, since it is smaller than the sum of its proper divisors (42327300).

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

22023420 is a wasteful number, since it uses less digits than its factorization.

22023420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15994 (or 15992 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 22023420 is about 4692.9116761346. The cubic root of 22023420 is about 280.3033277449.

Adding to 22023420 its reverse (2432022), we get a palindrome (24455442).

The spelling of 22023420 in words is "twenty-two million, twenty-three thousand, four hundred twenty".