1280346080 has 96 divisors (see below), whose sum is σ = 3311225568. Its totient is φ = 464947200.

The previous prime is 1280346077. The next prime is 1280346091. The reversal of 1280346080 is 806430821.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 121835 + ... + 131925.

It is an arithmetic number, because the mean of its divisors is an integer number (34491933).

Almost surely, 2^1280346080 is an apocalyptic number.

1280346080 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 1280346080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1655612784).

1280346080 is an abundant number, since it is smaller than the sum of its proper divisors (2030879488).

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

1280346080 is a wasteful number, since it uses less digits than its factorization.

1280346080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180 (or 10172 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1280346080 is about 35781.9239281512. The cubic root of 1280346080 is about 1085.8648925752.

The spelling of 1280346080 in words is "one billion, two hundred eighty million, three hundred forty-six thousand, eighty".