12440264 has 8 divisors (see below), whose sum is σ = 23325510. Its totient is φ = 6220128.

The previous prime is 12440249. The next prime is 12440273. The reversal of 12440264 is 46204421.

It can be written as a sum of positive squares in only one way, i.e., 11847364 + 592900 = 3442^2 + 770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777509 + ... + 777524.

Almost surely, 2^12440264 is an apocalyptic number.

It is an amenable number.

12440264 is a deficient number, since it is larger than the sum of its proper divisors (10885246).

12440264 is a wasteful number, since it uses less digits than its factorization.

12440264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555039 (or 1555035 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 12440264 is about 3527.0758426776. The cubic root of 12440264 is about 231.7091579381.

Adding to 12440264 its reverse (46204421), we get a palindrome (58644685).

The spelling of 12440264 in words is "twelve million, four hundred forty thousand, two hundred sixty-four".