3513728 has 32 divisors (see below), whose sum is σ = 7097160. Its totient is φ = 1732608.

The previous prime is 3513721. The next prime is 3513737. The reversal of 3513728 is 8273153.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 3513728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3513721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12275 + ... + 12557.

Almost surely, 2^3513728 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 3513728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3548580).

3513728 is an abundant number, since it is smaller than the sum of its proper divisors (3583432).

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

3513728 is an equidigital number, since it uses as much as digits as its factorization.

3513728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 382 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 3513728 is about 1874.4940650746. The cubic root of 3513728 is about 152.0276957843.

The spelling of 3513728 in words is "three million, five hundred thirteen thousand, seven hundred twenty-eight".