12978300 has 36 divisors (see below), whose sum is σ = 37551416. Its totient is φ = 3460800.

The previous prime is 12978239. The next prime is 12978307. The reversal of 12978300 is 387921.

It is a happy number.

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 (12978307) 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, 21331 + ... + 21930.

Almost surely, 2^12978300 is an apocalyptic number.

12978300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12978300 is an abundant number, since it is smaller than the sum of its proper divisors (24573116).

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

12978300 is a wasteful number, since it uses less digits than its factorization.

12978300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43278 (or 43271 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 12978300 is about 3602.5407700677. The cubic root of 12978300 is about 235.0025652353.

The spelling of 12978300 in words is "twelve million, nine hundred seventy-eight thousand, three hundred".