4515728 has 40 divisors (see below), whose sum is σ = 10439808. Its totient is φ = 1850112.

The previous prime is 4515697. The next prime is 4515737. The reversal of 4515728 is 8275154.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4515694 and 4515703.

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, 1700 + ... + 3452.

Almost surely, 2^4515728 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 4515728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5219904).

4515728 is an abundant number, since it is smaller than the sum of its proper divisors (5924080).

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

4515728 is a wasteful number, since it uses less digits than its factorization.

4515728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791 (or 1785 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 4515728 is about 2125.0242351559. The cubic root of 4515728 is about 165.2884821686.

The spelling of 4515728 in words is "four million, five hundred fifteen thousand, seven hundred twenty-eight".