3981504 has 56 divisors (see below), whose sum is σ = 10698480. Its totient is φ = 1306624.

The previous prime is 3981503. The next prime is 3981517. The reversal of 3981504 is 4051893.

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 a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (3981503) 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, 16972 + ... + 17204.

Almost surely, 2^3981504 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 3981504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5349240).

3981504 is an abundant number, since it is smaller than the sum of its proper divisors (6716976).

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

3981504 is a wasteful number, since it uses less digits than its factorization.

3981504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 3981504 is about 1995.3706422617. The cubic root of 3981504 is about 158.4950556894.

The spelling of 3981504 in words is "three million, nine hundred eighty-one thousand, five hundred four".