12321740 has 24 divisors (see below), whose sum is σ = 26576592. Its totient is φ = 4795200.

The previous prime is 12321733. The next prime is 12321763. The reversal of 12321740 is 4712321.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7586 + ... + 9065.

It is an arithmetic number, because the mean of its divisors is an integer number (1107358).

Almost surely, 2^12321740 is an apocalyptic number.

12321740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12321740 is an abundant number, since it is smaller than the sum of its proper divisors (14254852).

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

12321740 is a wasteful number, since it uses less digits than its factorization.

12321740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16697 (or 16695 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 12321740 is about 3510.2336104596. The cubic root of 12321740 is about 230.9709426666.

The spelling of 12321740 in words is "twelve million, three hundred twenty-one thousand, seven hundred forty".