3889280 has 64 divisors (see below), whose sum is σ = 9547200. Its totient is φ = 1514496.

The previous prime is 3889279. The next prime is 3889289. The reversal of 3889280 is 829883.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (3889289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37709 + ... + 37811.

It is an arithmetic number, because the mean of its divisors is an integer number (149175).

Almost surely, 2^3889280 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 3889280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4773600).

3889280 is an abundant number, since it is smaller than the sum of its proper divisors (5657920).

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

3889280 is a wasteful number, since it uses less digits than its factorization.

3889280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 3889280 is about 1972.1257566393. The cubic root of 3889280 is about 157.2617376696.

The spelling of 3889280 in words is "three million, eight hundred eighty-nine thousand, two hundred eighty".