12633140 has 24 divisors (see below), whose sum is σ = 28570920. Its totient is φ = 4664448.

The previous prime is 12633109. The next prime is 12633143. The reversal of 12633140 is 4133621.

It can be written as a sum of positive squares in 4 ways, for example, as 550564 + 12082576 = 742^2 + 3476^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12633143) 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, 24035 + ... + 24554.

It is an arithmetic number, because the mean of its divisors is an integer number (1190455).

Almost surely, 2^12633140 is an apocalyptic number.

12633140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12633140 is an abundant number, since it is smaller than the sum of its proper divisors (15937780).

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

12633140 is a wasteful number, since it uses less digits than its factorization.

12633140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48611 (or 48609 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 12633140 is about 3554.3128731163. The cubic root of 12633140 is about 232.9005082789.

Adding to 12633140 its reverse (4133621), we get a palindrome (16766761).

The spelling of 12633140 in words is "twelve million, six hundred thirty-three thousand, one hundred forty".