12263640 has 32 divisors (see below), whose sum is σ = 36791280. Its totient is φ = 3270272.

The previous prime is 12263611. The next prime is 12263651. The reversal of 12263640 is 4636221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12263640.

It is a congruent number.

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, 50979 + ... + 51218.

Almost surely, 2^12263640 is an apocalyptic number.

12263640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12263640 is an abundant number, since it is smaller than the sum of its proper divisors (24527640).

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

12263640 is a wasteful number, since it uses less digits than its factorization.

12263640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102211 (or 102207 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 12263640 is about 3501.9480293117. The cubic root of 12263640 is about 230.6073425278.

Adding to 12263640 its reverse (4636221), we get a palindrome (16899861).

The spelling of 12263640 in words is "twelve million, two hundred sixty-three thousand, six hundred forty".