1260392004 has 81 divisors (see below), whose sum is σ = 3272813271. Its totient is φ = 408983040.

The previous prime is 1260391981. The next prime is 1260392011. The reversal of 1260392004 is 4002930621.

The square root of 1260392004 is 35502.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 467856900 + 792535104 = 21630^2 + 28152^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12993684 + ... + 12993780.

Almost surely, 2^1260392004 is an apocalyptic number.

1260392004 is the 35502-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1260392004

1260392004 is an abundant number, since it is smaller than the sum of its proper divisors (2012421267).

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

1260392004 is an equidigital number, since it uses as much as digits as its factorization.

1260392004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The cubic root of 1260392004 is about 1080.1942963189.

The spelling of 1260392004 in words is "one billion, two hundred sixty million, three hundred ninety-two thousand, four".