12653630 has 32 divisors (see below), whose sum is σ = 25526880. Its totient is φ = 4475520.

The previous prime is 12653629. The next prime is 12653633. The reversal of 12653630 is 3635621.

It is a super-2 number, since 2×12653630² = 320228704353800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12653630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12653633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2516 + ... + 5624.

It is an arithmetic number, because the mean of its divisors is an integer number (797715).

Almost surely, 2^12653630 is an apocalyptic number.

12653630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12653630 is an abundant number, since it is smaller than the sum of its proper divisors (12873250).

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

12653630 is a wasteful number, since it uses less digits than its factorization.

12653630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 12653630 is about 3557.1941189651. The cubic root of 12653630 is about 233.0263559495.

Subtracting from 12653630 its reverse (3635621), we obtain a square (9018009 = 3003²).

The spelling of 12653630 in words is "twelve million, six hundred fifty-three thousand, six hundred thirty".