3538728 has 80 divisors (see below), whose sum is σ = 10222080. Its totient is φ = 1143072.

The previous prime is 3538699. The next prime is 3538747. The reversal of 3538728 is 8278353.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3538692 and 3538701.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27801 + ... + 27927.

It is an arithmetic number, because the mean of its divisors is an integer number (127776).

Almost surely, 2^3538728 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 3538728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5111040).

3538728 is an abundant number, since it is smaller than the sum of its proper divisors (6683352).

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

3538728 is a wasteful number, since it uses less digits than its factorization.

3538728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 175 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 3538728 is about 1881.1507116656. The cubic root of 3538728 is about 152.3874005332.

The spelling of 3538728 in words is "three million, five hundred thirty-eight thousand, seven hundred twenty-eight".