22331420 has 12 divisors (see below), whose sum is σ = 46896024. Its totient is φ = 8932560.

The previous prime is 22331401. The next prime is 22331453. The reversal of 22331420 is 2413322.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558266 + ... + 558305.

It is an arithmetic number, because the mean of its divisors is an integer number (3908002).

Almost surely, 2^22331420 is an apocalyptic number.

22331420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22331420 is an abundant number, since it is smaller than the sum of its proper divisors (24564604).

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

22331420 is a wasteful number, since it uses less digits than its factorization.

22331420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116580 (or 1116578 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22331420 is about 4725.6131877250. The cubic root of 22331420 is about 281.6039743919.

Adding to 22331420 its reverse (2413322), we get a palindrome (24744742).

The spelling of 22331420 in words is "twenty-two million, three hundred thirty-one thousand, four hundred twenty".