12620244 has 108 divisors (see below), whose sum is σ = 37384704. Its totient is φ = 3302208.

The previous prime is 12620243. The next prime is 12620263. The reversal of 12620244 is 44202621.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12620244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12620243) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 99309 + ... + 99435.

Almost surely, 2^12620244 is an apocalyptic number.

12620244 is a gapful number since it is divisible by the number (14) 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 12620244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18692352).

12620244 is an abundant number, since it is smaller than the sum of its proper divisors (24764460).

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

12620244 is a wasteful number, since it uses less digits than its factorization.

12620244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 12620244 is about 3552.4982758617. The cubic root of 12620244 is about 232.8212324608.

Adding to 12620244 its reverse (44202621), we get a palindrome (56822865).

The spelling of 12620244 in words is "twelve million, six hundred twenty thousand, two hundred forty-four".