23440221432 has 48 divisors (see below), whose sum is σ = 63493386840. Its totient is φ = 7812243648.

The previous prime is 23440221419. The next prime is 23440221439. The reversal of 23440221432 is 23412204432.

23440221432 is a `hidden beast` number, since 2 + 3 + 4 + 4 + 0 + 221 + 432 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 23440221396 and 23440221405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440221439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 559603 + ... + 600029.

Almost surely, 2^23440221432 is an apocalyptic number.

It is an amenable number.

23440221432 is an abundant number, since it is smaller than the sum of its proper divisors (40053165408).

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

23440221432 is a wasteful number, since it uses less digits than its factorization.

23440221432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48492 (or 48485 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 23440221432 its reverse (23412204432), we get a palindrome (46852425864).

The spelling of 23440221432 in words is "twenty-three billion, four hundred forty million, two hundred twenty-one thousand, four hundred thirty-two".