12621700 has 144 divisors (see below), whose sum is σ = 35969920. Its totient is φ = 3732480.

The previous prime is 12621671. The next prime is 12621703. The reversal of 12621700 is 712621.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (12621703) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172864 + ... + 172936.

Almost surely, 2^12621700 is an apocalyptic number.

12621700 is a gapful number since it is divisible by the number (10) 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 12621700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17984960).

12621700 is an abundant number, since it is smaller than the sum of its proper divisors (23348220).

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

12621700 is a wasteful number, since it uses less digits than its factorization.

12621700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 12621700 is about 3552.7031961592. The cubic root of 12621700 is about 232.8301856601.

The spelling of 12621700 in words is "twelve million, six hundred twenty-one thousand, seven hundred".