3905256 has 64 divisors (see below), whose sum is σ = 10483200. Its totient is φ = 1209600.

The previous prime is 3905221. The next prime is 3905263. The reversal of 3905256 is 6525093.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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 15 ways as a sum of consecutive naturals, for example, 21486 + ... + 21666.

It is an arithmetic number, because the mean of its divisors is an integer number (163800).

Almost surely, 2^3905256 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 3905256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5241600).

3905256 is an abundant number, since it is smaller than the sum of its proper divisors (6577944).

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

3905256 is a wasteful number, since it uses less digits than its factorization.

3905256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 3905256 is about 1976.1720572865. The cubic root of 3905256 is about 157.4767715807.

The spelling of 3905256 in words is "three million, nine hundred five thousand, two hundred fifty-six".