12633940 has 24 divisors (see below), whose sum is σ = 28943712. Its totient is φ = 4594080.

The previous prime is 12633931. The next prime is 12633949. The reversal of 12633940 is 4933621.

It is an interprime number because it is at equal distance from previous prime (12633931) and next prime (12633949).

It is a junction number, because it is equal to n+sod(n) for n = 12633899 and 12633908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12633949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28494 + ... + 28933.

It is an arithmetic number, because the mean of its divisors is an integer number (1205988).

Almost surely, 2^12633940 is an apocalyptic number.

12633940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12633940 is an abundant number, since it is smaller than the sum of its proper divisors (16309772).

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

12633940 is a wasteful number, since it uses less digits than its factorization.

12633940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57447 (or 57445 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 12633940 is about 3554.4254106677. The cubic root of 12633940 is about 232.9054243561.

The spelling of 12633940 in words is "twelve million, six hundred thirty-three thousand, nine hundred forty".