1260303440 has 80 divisors (see below), whose sum is σ = 3364873920. Its totient is φ = 434165760.

The previous prime is 1260303437. The next prime is 1260303479. The reversal of 1260303440 is 443030621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20969 + ... + 54408.

It is an arithmetic number, because the mean of its divisors is an integer number (42060924).

Almost surely, 2^1260303440 is an apocalyptic number.

1260303440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1260303440 is an abundant number, since it is smaller than the sum of its proper divisors (2104570480).

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

1260303440 is a wasteful number, since it uses less digits than its factorization.

1260303440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75420 (or 75414 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1260303440 is about 35500.7526680773. The cubic root of 1260303440 is about 1080.1689950454.

The spelling of 1260303440 in words is "one billion, two hundred sixty million, three hundred three thousand, four hundred forty".