3237728 has 48 divisors (see below), whose sum is σ = 7063056. Its totient is φ = 1451520.

The previous prime is 3237719. The next prime is 3237761. The reversal of 3237728 is 8277323.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 3237694 and 3237703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17798 + ... + 17978.

It is an arithmetic number, because the mean of its divisors is an integer number (147147).

Almost surely, 2^3237728 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 3237728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3531528).

3237728 is an abundant number, since it is smaller than the sum of its proper divisors (3825328).

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

3237728 is a wasteful number, since it uses less digits than its factorization.

3237728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 239 counting only the distinct ones).

The product of its digits is 14112, while the sum is 32.

The square root of 3237728 is about 1799.3687782108. The cubic root of 3237728 is about 147.9381285088.

The spelling of 3237728 in words is "three million, two hundred thirty-seven thousand, seven hundred twenty-eight".