1260320806 has 32 divisors (see below), whose sum is σ = 2128865760. Its totient is φ = 556056576.

The previous prime is 1260320801. The next prime is 1260320813. The reversal of 1260320806 is 6080230621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260320801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52606 + ... + 72718.

It is an arithmetic number, because the mean of its divisors is an integer number (66527055).

Almost surely, 2^1260320806 is an apocalyptic number.

1260320806 is a deficient number, since it is larger than the sum of its proper divisors (868544954).

1260320806 is a wasteful number, since it uses less digits than its factorization.

1260320806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20248.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1260320806 is about 35500.9972535984. The cubic root of 1260320806 is about 1080.1739563185.

The spelling of 1260320806 in words is "one billion, two hundred sixty million, three hundred twenty thousand, eight hundred six".