1260447340 has 12 divisors (see below), whose sum is σ = 2646939456. Its totient is φ = 504178928.

The previous prime is 1260447323. The next prime is 1260447341. The reversal of 1260447340 is 437440621.

It is not an unprimeable number, because it can be changed into a prime (1260447341) 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, 31511164 + ... + 31511203.

It is an arithmetic number, because the mean of its divisors is an integer number (220578288).

Almost surely, 2^1260447340 is an apocalyptic number.

1260447340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1260447340 is an abundant number, since it is smaller than the sum of its proper divisors (1386492116).

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

1260447340 is a wasteful number, since it uses less digits than its factorization.

1260447340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63022376 (or 63022374 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 1260447340 is about 35502.7793278216. The cubic root of 1260447340 is about 1080.2101042995.

Adding to 1260447340 its reverse (437440621), we get a palindrome (1697887961).

The spelling of 1260447340 in words is "one billion, two hundred sixty million, four hundred forty-seven thousand, three hundred forty".