12631040 has 44 divisors (see below), whose sum is σ = 30311976. Its totient is φ = 5050368.

The previous prime is 12631019. The next prime is 12631057. The reversal of 12631040 is 4013621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3887 + ... + 6353.

Almost surely, 2^12631040 is an apocalyptic number.

12631040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12631040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15155988).

12631040 is an abundant number, since it is smaller than the sum of its proper divisors (17680936).

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

12631040 is an equidigital number, since it uses as much as digits as its factorization.

12631040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492 (or 2474 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 12631040 is about 3554.0174450894. The cubic root of 12631040 is about 232.8876025888.

Adding to 12631040 its reverse (4013621), we get a palindrome (16644661).

The spelling of 12631040 in words is "twelve million, six hundred thirty-one thousand, forty".