12312380 has 24 divisors (see below), whose sum is σ = 27217680. Its totient is φ = 4665600.

The previous prime is 12312359. The next prime is 12312397. The reversal of 12312380 is 8321321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15821 + ... + 16580.

It is an arithmetic number, because the mean of its divisors is an integer number (1134070).

Almost surely, 2^12312380 is an apocalyptic number.

12312380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312380 is an abundant number, since it is smaller than the sum of its proper divisors (14905300).

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

12312380 is a wasteful number, since it uses less digits than its factorization.

12312380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32429 (or 32427 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 12312380 is about 3508.9001125709. The cubic root of 12312380 is about 230.9124434702.

The spelling of 12312380 in words is "twelve million, three hundred twelve thousand, three hundred eighty".