1330220280 has 128 divisors (see below), whose sum is σ = 4054302720. Its totient is φ = 349117440.

The previous prime is 1330220279. The next prime is 1330220299. The reversal of 1330220280 is 820220331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3472969 + ... + 3473351.

It is an arithmetic number, because the mean of its divisors is an integer number (31674240).

Almost surely, 2^1330220280 is an apocalyptic number.

1330220280 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 1330220280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2027151360).

1330220280 is an abundant number, since it is smaller than the sum of its proper divisors (2724082440).

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

1330220280 is a wasteful number, since it uses less digits than its factorization.

1330220280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1330220280 is about 36472.1850181752. The cubic root of 1330220280 is about 1099.7851591441.

The spelling of 1330220280 in words is "one billion, three hundred thirty million, two hundred twenty thousand, two hundred eighty".