3994320 has 160 divisors (see below), whose sum is σ = 14463360. Its totient is φ = 901120.

The previous prime is 3994279. The next prime is 3994357. The reversal of 3994320 is 234993.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44836 + ... + 44924.

It is an arithmetic number, because the mean of its divisors is an integer number (90396).

Almost surely, 2^3994320 is an apocalyptic number.

3994320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3994320 is the 1632-nd pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3994320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7231680).

3994320 is an abundant number, since it is smaller than the sum of its proper divisors (10469040).

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

3994320 is a wasteful number, since it uses less digits than its factorization.

3994320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 3994320 is about 1998.5794955418. The cubic root of 3994320 is about 158.6649326208.

The spelling of 3994320 in words is "three million, nine hundred ninety-four thousand, three hundred twenty".