12918900 has 36 divisors (see below), whose sum is σ = 37379552. Its totient is φ = 3444960.

The previous prime is 12918889. The next prime is 12918901. The reversal of 12918900 is 981921.

It is a super-3 number, since 3×12918900³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21232 + ... + 21831.

Almost surely, 2^12918900 is an apocalyptic number.

12918900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12918900 is an abundant number, since it is smaller than the sum of its proper divisors (24460652).

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

12918900 is a wasteful number, since it uses less digits than its factorization.

12918900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43080 (or 43073 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 12918900 is about 3594.2871337721. The cubic root of 12918900 is about 234.6434914197.

The spelling of 12918900 in words is "twelve million, nine hundred eighteen thousand, nine hundred".