3639328 has 72 divisors (see below), whose sum is σ = 9135504. Its totient is φ = 1411200.

The previous prime is 3639323. The next prime is 3639347. The reversal of 3639328 is 8239363.

It is a junction number, because it is equal to n+sod(n) for n = 3639293 and 3639302.

It is not an unprimeable number, because it can be changed into a prime (3639323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17143 + ... + 17353.

It is an arithmetic number, because the mean of its divisors is an integer number (126882).

Almost surely, 2^3639328 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 3639328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4567752).

3639328 is an abundant number, since it is smaller than the sum of its proper divisors (5496176).

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

3639328 is a wasteful number, since it uses less digits than its factorization.

3639328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 231 counting only the distinct ones).

The product of its digits is 23328, while the sum is 34.

The square root of 3639328 is about 1907.7022828523. The cubic root of 3639328 is about 153.8179667334.

The spelling of 3639328 in words is "three million, six hundred thirty-nine thousand, three hundred twenty-eight".