12456740 has 24 divisors (see below), whose sum is σ = 26432952. Its totient is φ = 4930560.

The previous prime is 12456721. The next prime is 12456751. The reversal of 12456740 is 4765421.

It can be written as a sum of positive squares in 4 ways, for example, as 401956 + 12054784 = 634^2 + 3472^2 .

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, 1271 + ... + 5150.

It is an arithmetic number, because the mean of its divisors is an integer number (1101373).

Almost surely, 2^12456740 is an apocalyptic number.

12456740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12456740 is an abundant number, since it is smaller than the sum of its proper divisors (13976212).

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

12456740 is a wasteful number, since it uses less digits than its factorization.

12456740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6527 (or 6525 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 12456740 is about 3529.4107156861. The cubic root of 12456740 is about 231.8114053918.

The spelling of 12456740 in words is "twelve million, four hundred fifty-six thousand, seven hundred forty".