23120444440 has 32 divisors (see below), whose sum is σ = 52507187280. Its totient is φ = 9161744512.

The previous prime is 23120444407. The next prime is 23120444467. The reversal of 23120444440 is 4444402132.

It is a super-2 number, since 2×23120444440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23120444399 and 23120444408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2696707 + ... + 2705266.

Almost surely, 2^23120444440 is an apocalyptic number.

23120444440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23120444440 is an abundant number, since it is smaller than the sum of its proper divisors (29386742840).

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

23120444440 is a wasteful number, since it uses less digits than its factorization.

23120444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402091 (or 5402087 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 23120444440 its reverse (4444402132), we get a palindrome (27564846572).

It can be divided in two parts, 2312044 and 4440, that added together give a square (2316484 = 1522²).

The spelling of 23120444440 in words is "twenty-three billion, one hundred twenty million, four hundred forty-four thousand, four hundred forty".