3904280 has 16 divisors (see below), whose sum is σ = 8784720. Its totient is φ = 1561696.

The previous prime is 3904261. The next prime is 3904283. The reversal of 3904280 is 824093.

3904280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3904283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48764 + ... + 48843.

It is an arithmetic number, because the mean of its divisors is an integer number (549045).

Almost surely, 2^3904280 is an apocalyptic number.

It is an amenable number.

3904280 is an abundant number, since it is smaller than the sum of its proper divisors (4880440).

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

3904280 is a wasteful number, since it uses less digits than its factorization.

3904280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97618 (or 97614 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 3904280 is about 1975.9250997950. The cubic root of 3904280 is about 157.4636516440.

The spelling of 3904280 in words is "three million, nine hundred four thousand, two hundred eighty".