12800080 has 20 divisors (see below), whose sum is σ = 29760372. Its totient is φ = 5120000.

The previous prime is 12800071. The next prime is 12800087. The reversal of 12800080 is 8000821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10214416 + 2585664 = 3196^2 + 1608^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12800087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79921 + ... + 80080.

Almost surely, 2^12800080 is an apocalyptic number.

12800080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12800080 is an abundant number, since it is smaller than the sum of its proper divisors (16960292).

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

12800080 is a wasteful number, since it uses less digits than its factorization.

12800080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160014 (or 160008 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 12800080 is about 3577.7199443221. The cubic root of 12800080 is about 233.9219063923.

It can be divided in two parts, 128000 and 80, that multiplied together give a square (10240000 = 3200²).

The spelling of 12800080 in words is "twelve million, eight hundred thousand, eighty".