3884724 has 54 divisors (see below), whose sum is σ = 10327590. Its totient is φ = 1229760.

The previous prime is 3884717. The next prime is 3884729. The reversal of 3884724 is 4274883.

It can be written as a sum of positive squares in 3 ways, for example, as 152100 + 3732624 = 390^2 + 1932^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3884729) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 63654 + ... + 63714.

Almost surely, 2^3884724 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 3884724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5163795).

3884724 is an abundant number, since it is smaller than the sum of its proper divisors (6442866).

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

3884724 is a wasteful number, since it uses less digits than its factorization.

3884724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 95 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 3884724 is about 1970.9703194112. The cubic root of 3884724 is about 157.2003068968.

The spelling of 3884724 in words is "three million, eight hundred eighty-four thousand, seven hundred twenty-four".