383280280 has 128 divisors (see below), whose sum is σ = 945561600. Its totient is φ = 139392000.

The previous prime is 383280251. The next prime is 383280307. The reversal of 383280280 is 82082383.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2538205 + ... + 2538355.

It is an arithmetic number, because the mean of its divisors is an integer number (7387200).

Almost surely, 2^383280280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 383280280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472780800).

383280280 is an abundant number, since it is smaller than the sum of its proper divisors (562281320).

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

383280280 is a wasteful number, since it uses less digits than its factorization.

383280280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 383280280 is about 19577.5453006755. The cubic root of 383280280 is about 726.3938496491.

The spelling of 383280280 in words is "three hundred eighty-three million, two hundred eighty thousand, two hundred eighty".