12977800 has 96 divisors (see below), whose sum is σ = 34953120. Its totient is φ = 4428800.

The previous prime is 12977759. The next prime is 12977803. The reversal of 12977800 is 877921.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (12977803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37227 + ... + 37573.

It is an arithmetic number, because the mean of its divisors is an integer number (364095).

Almost surely, 2^12977800 is an apocalyptic number.

12977800 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 12977800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17476560).

12977800 is an abundant number, since it is smaller than the sum of its proper divisors (21975320).

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

12977800 is a wasteful number, since it uses less digits than its factorization.

12977800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 12977800 is about 3602.4713739321. The cubic root of 12977800 is about 234.9995473056. Note that the first 3 decimals are identical.

The spelling of 12977800 in words is "twelve million, nine hundred seventy-seven thousand, eight hundred".