3539668728 has 32 divisors (see below), whose sum is σ = 8861288400. Its totient is φ = 1178274048.

The previous prime is 3539668723. The next prime is 3539668729. The reversal of 3539668728 is 8278669353.

It is a super-2 number, since 2×3539668728² = 25058509407962275968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3539668721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83013 + ... + 118196.

Almost surely, 2^3539668728 is an apocalyptic number.

It is an amenable number.

3539668728 is an abundant number, since it is smaller than the sum of its proper divisors (5321619672).

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

3539668728 is a wasteful number, since it uses less digits than its factorization.

3539668728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201951 (or 201947 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 57.

The square root of 3539668728 is about 59495.1151608264. The cubic root of 3539668728 is about 1524.0090278535.

The spelling of 3539668728 in words is "three billion, five hundred thirty-nine million, six hundred sixty-eight thousand, seven hundred twenty-eight".