22332420 has 72 divisors (see below), whose sum is σ = 73906560. Its totient is φ = 5413440.

The previous prime is 22332419. The next prime is 22332421. The reversal of 22332420 is 2423322.

It is an interprime number because it is at equal distance from previous prime (22332419) and next prime (22332421).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22332393 and 22332402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22332421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3660 + ... + 7619.

It is an arithmetic number, because the mean of its divisors is an integer number (1026480).

Almost surely, 2^22332420 is an apocalyptic number.

22332420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22332420 is an abundant number, since it is smaller than the sum of its proper divisors (51574140).

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

22332420 is a wasteful number, since it uses less digits than its factorization.

22332420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11305 (or 11300 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 22332420 is about 4725.7189929153. The cubic root of 22332420 is about 281.6081777336.

Adding to 22332420 its reverse (2423322), we get a palindrome (24755742).

The spelling of 22332420 in words is "twenty-two million, three hundred thirty-two thousand, four hundred twenty".