12232406400 has 96 divisors (see below), whose sum is σ = 40290520200. Its totient is φ = 3261972480.

The previous prime is 12232406399. The next prime is 12232406429. The reversal of 12232406400 is 460423221.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 627505 + ... + 646704.

Almost surely, 2^12232406400 is an apocalyptic number.

12232406400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12232406400 is an abundant number, since it is smaller than the sum of its proper divisors (28058113800).

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

12232406400 is a wasteful number, since it uses less digits than its factorization.

12232406400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274236 (or 1274219 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12232406400 its reverse (460423221), we get a palindrome (12692829621).

The spelling of 12232406400 in words is "twelve billion, two hundred thirty-two million, four hundred six thousand, four hundred".