12621300 has 36 divisors (see below), whose sum is σ = 36518496. Its totient is φ = 3365600.

The previous prime is 12621299. The next prime is 12621307. The reversal of 12621300 is 312621.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12621300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12621307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20736 + ... + 21335.

Almost surely, 2^12621300 is an apocalyptic number.

12621300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12621300 is an abundant number, since it is smaller than the sum of its proper divisors (23897196).

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

12621300 is a wasteful number, since it uses less digits than its factorization.

12621300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42088 (or 42081 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 12621300 is about 3552.6469005518. The cubic root of 12621300 is about 232.8277260585.

Adding to 12621300 its reverse (312621), we get a palindrome (12933921).

It can be divided in two parts, 12621 and 300, that added together give a palindrome (12921).

The spelling of 12621300 in words is "twelve million, six hundred twenty-one thousand, three hundred".