12440764 has 24 divisors (see below), whose sum is σ = 24956288. Its totient is φ = 5315760.

The previous prime is 12440741. The next prime is 12440809. The reversal of 12440764 is 46704421.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17659 + ... + 18349.

Almost surely, 2^12440764 is an apocalyptic number.

12440764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12440764 is an abundant number, since it is smaller than the sum of its proper divisors (12515524).

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

12440764 is a wasteful number, since it uses less digits than its factorization.

12440764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345 (or 1343 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 12440764 is about 3527.1467222105. The cubic root of 12440764 is about 231.7122621870.

The spelling of 12440764 in words is "twelve million, four hundred forty thousand, seven hundred sixty-four".