22423520 has 48 divisors (see below), whose sum is σ = 60546528. Its totient is φ = 7687680.

The previous prime is 22423469. The next prime is 22423537. The reversal of 22423520 is 2532422.

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 = 22423492 and 22423501.

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, 8891 + ... + 11130.

It is an arithmetic number, because the mean of its divisors is an integer number (1261386).

Almost surely, 2^22423520 is an apocalyptic number.

22423520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22423520 is an abundant number, since it is smaller than the sum of its proper divisors (38123008).

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

22423520 is a wasteful number, since it uses less digits than its factorization.

22423520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20043 (or 20035 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 22423520 is about 4735.3479280830. The cubic root of 22423520 is about 281.9905769532.

Adding to 22423520 its reverse (2532422), we get a palindrome (24955942).

The spelling of 22423520 in words is "twenty-two million, four hundred twenty-three thousand, five hundred twenty".