22140723432 has 128 divisors (see below), whose sum is σ = 59493087360. Its totient is φ = 6841712640.

The previous prime is 22140723403. The next prime is 22140723433. The reversal of 22140723432 is 23432704122.

It is a self number, because there is not a number n which added to its sum of digits gives 22140723432.

It is not an unprimeable number, because it can be changed into a prime (22140723433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14255968 + ... + 14257520.

It is an arithmetic number, because the mean of its divisors is an integer number (464789745).

Almost surely, 2^22140723432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22140723432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29746543680).

22140723432 is an abundant number, since it is smaller than the sum of its proper divisors (37352363928).

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

22140723432 is a wasteful number, since it uses less digits than its factorization.

22140723432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083 (or 2079 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The spelling of 22140723432 in words is "twenty-two billion, one hundred forty million, seven hundred twenty-three thousand, four hundred thirty-two".