12305400 has 48 divisors (see below), whose sum is σ = 38148600. Its totient is φ = 3281280.

The previous prime is 12305383. The next prime is 12305401. The reversal of 12305400 is 450321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12305400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12305401) 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, 9655 + ... + 10854.

Almost surely, 2^12305400 is an apocalyptic number.

12305400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12305400 is an abundant number, since it is smaller than the sum of its proper divisors (25843200).

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

12305400 is a wasteful number, since it uses less digits than its factorization.

12305400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20528 (or 20519 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 12305400 is about 3507.9053579023. The cubic root of 12305400 is about 230.8687997683.

Adding to 12305400 its reverse (450321), we get a palindrome (12755721).

The spelling of 12305400 in words is "twelve million, three hundred five thousand, four hundred".