12307920 has 40 divisors (see below), whose sum is σ = 38155296. Its totient is φ = 3282048.

The previous prime is 12307903. The next prime is 12307927. The reversal of 12307920 is 2970321.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12307927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25402 + ... + 25881.

Almost surely, 2^12307920 is an apocalyptic number.

12307920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12307920 is an abundant number, since it is smaller than the sum of its proper divisors (25847376).

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

12307920 is a wasteful number, since it uses less digits than its factorization.

12307920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51299 (or 51293 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 12307920 is about 3508.2645282247. The cubic root of 12307920 is about 230.8845584234.

The spelling of 12307920 in words is "twelve million, three hundred seven thousand, nine hundred twenty".