23120450400 has 72 divisors (see below), whose sum is σ = 75257073864. Its totient is φ = 6165452800.

The previous prime is 23120450393. The next prime is 23120450401. The reversal of 23120450400 is 405402132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23120450401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4814361 + ... + 4819160.

It is an arithmetic number, because the mean of its divisors is an integer number (1045237137).

Almost surely, 2^23120450400 is an apocalyptic number.

23120450400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23120450400 is an abundant number, since it is smaller than the sum of its proper divisors (52136623464).

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

23120450400 is a wasteful number, since it uses less digits than its factorization.

23120450400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9633544 (or 9633531 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 23120450400 its reverse (405402132), we get a palindrome (23525852532).

The spelling of 23120450400 in words is "twenty-three billion, one hundred twenty million, four hundred fifty thousand, four hundred".