3944628 has 72 divisors (see below), whose sum is σ = 10774400. Its totient is φ = 1213056.

The previous prime is 3944627. The next prime is 3944669. The reversal of 3944628 is 8264493.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 3944592 and 3944601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49893 + ... + 49971.

Almost surely, 2^3944628 is an apocalyptic number.

3944628 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3944628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5387200).

3944628 is an abundant number, since it is smaller than the sum of its proper divisors (6829772).

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

3944628 is a wasteful number, since it uses less digits than its factorization.

3944628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 176 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 3944628 is about 1986.1087583514. The cubic root of 3944628 is about 158.0042192966.

The spelling of 3944628 in words is "three million, nine hundred forty-four thousand, six hundred twenty-eight".