1260557340 has 144 divisors (see below), whose sum is σ = 4238567424. Its totient is φ = 278812800.

The previous prime is 1260557323. The next prime is 1260557377. The reversal of 1260557340 is 437550621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84225 + ... + 98055.

It is an arithmetic number, because the mean of its divisors is an integer number (29434496).

Almost surely, 2^1260557340 is an apocalyptic number.

1260557340 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 1260557340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2119283712).

1260557340 is an abundant number, since it is smaller than the sum of its proper divisors (2978010084).

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

1260557340 is a wasteful number, since it uses less digits than its factorization.

1260557340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13888 (or 13879 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 1260557340 is about 35504.3284685121. The cubic root of 1260557340 is about 1080.2415269146.

The spelling of 1260557340 in words is "one billion, two hundred sixty million, five hundred fifty-seven thousand, three hundred forty".