12780200 has 24 divisors (see below), whose sum is σ = 29714430. Its totient is φ = 5112000.

The previous prime is 12780197. The next prime is 12780211. The reversal of 12780200 is 208721.

It can be written as a sum of positive squares in 3 ways, for example, as 11930116 + 850084 = 3454^2 + 922^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31751 + ... + 32150.

Almost surely, 2^12780200 is an apocalyptic number.

12780200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12780200 is an abundant number, since it is smaller than the sum of its proper divisors (16934230).

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

12780200 is a wasteful number, since it uses less digits than its factorization.

12780200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63917 (or 63908 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 12780200 is about 3574.9405589464. The cubic root of 12780200 is about 233.8007410793.

Adding to 12780200 its reverse (208721), we get a palindrome (12988921).

The spelling of 12780200 in words is "twelve million, seven hundred eighty thousand, two hundred".