12632040 has 48 divisors (see below), whose sum is σ = 41055300. Its totient is φ = 3368448.

The previous prime is 12631999. The next prime is 12632041. The reversal of 12632040 is 4023621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12489156 + 142884 = 3534^2 + 378^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12632041) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 17185 + ... + 17904.

Almost surely, 2^12632040 is an apocalyptic number.

12632040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12632040 is an abundant number, since it is smaller than the sum of its proper divisors (28423260).

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

12632040 is a wasteful number, since it uses less digits than its factorization.

12632040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35106 (or 35099 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 12632040 is about 3554.1581281648. The cubic root of 12632040 is about 232.8937483339.

Adding to 12632040 its reverse (4023621), we get a palindrome (16655661).

The spelling of 12632040 in words is "twelve million, six hundred thirty-two thousand, forty".