3527728 has 40 divisors (see below), whose sum is σ = 7209360. Its totient is φ = 1670400.

The previous prime is 3527723. The next prime is 3527731. The reversal of 3527728 is 8277253.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 3⁷ + 5⁷ + 2⁵ + 7⁴ + 7⁷ + 2¹⁹ + 8⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 3527693 and 3527702.

It is not an unprimeable number, because it can be changed into a prime (3527723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34878 + ... + 34978.

It is an arithmetic number, because the mean of its divisors is an integer number (180234).

Almost surely, 2^3527728 is an apocalyptic number.

It is an amenable number.

3527728 is an abundant number, since it is smaller than the sum of its proper divisors (3681632).

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

3527728 is a wasteful number, since it uses less digits than its factorization.

3527728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 199 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 3527728 is about 1878.2246936935. The cubic root of 3527728 is about 152.2293398518.

The spelling of 3527728 in words is "three million, five hundred twenty-seven thousand, seven hundred twenty-eight".