3818280 has 64 divisors (see below), whose sum is σ = 11715840. Its totient is φ = 995072.

The previous prime is 3818267. The next prime is 3818291. The reversal of 3818280 is 828183.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 5302 + ... + 5978.

It is an arithmetic number, because the mean of its divisors is an integer number (183060).

Almost surely, 2^3818280 is an apocalyptic number.

3818280 is a gapful number since it is divisible by the number (30) 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 3818280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5857920).

3818280 is an abundant number, since it is smaller than the sum of its proper divisors (7897560).

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

3818280 is a wasteful number, since it uses less digits than its factorization.

3818280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 3818280 is about 1954.0419647490. The cubic root of 3818280 is about 156.2989009607.

The spelling of 3818280 in words is "three million, eight hundred eighteen thousand, two hundred eighty".