22431432 has 32 divisors (see below), whose sum is σ = 59378400. Its totient is φ = 7037184.

The previous prime is 22431427. The next prime is 22431433. The reversal of 22431432 is 23413422.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22431399 and 22431408.

It is not an unprimeable number, because it can be changed into a prime (22431433) 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 7 ways as a sum of consecutive naturals, for example, 27082 + ... + 27897.

It is an arithmetic number, because the mean of its divisors is an integer number (1855575).

Almost surely, 2^22431432 is an apocalyptic number.

It is an amenable number.

22431432 is an abundant number, since it is smaller than the sum of its proper divisors (36946968).

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

22431432 is a wasteful number, since it uses less digits than its factorization.

22431432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55005 (or 55001 counting only the distinct ones).

The product of its digits is 1152, while the sum is 21.

The square root of 22431432 is about 4736.1832734809. The cubic root of 22431432 is about 282.0237392620.

Adding to 22431432 its reverse (23413422), we get a palindrome (45844854).

The spelling of 22431432 in words is "twenty-two million, four hundred thirty-one thousand, four hundred thirty-two".