3904288 has 24 divisors (see below), whose sum is σ = 8139852. Its totient is φ = 1837056.

The previous prime is 3904283. The next prime is 3904289. The reversal of 3904288 is 8824093.

It can be written as a sum of positive squares in 2 ways, for example, as 3283344 + 620944 = 1812^2 + 788^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3045 + ... + 4132.

Almost surely, 2^3904288 is an apocalyptic number.

It is an amenable number.

3904288 is an abundant number, since it is smaller than the sum of its proper divisors (4235564).

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

3904288 is a wasteful number, since it uses less digits than its factorization.

3904288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7204 (or 7196 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 3904288 is about 1975.9271241622. The cubic root of 3904288 is about 157.4637591933.

The spelling of 3904288 in words is "three million, nine hundred four thousand, two hundred eighty-eight".