3539557728 has 432 divisors, whose sum is σ = 12652960320. Its totient is φ = 932746752.

The previous prime is 3539557727. The next prime is 3539557741. The reversal of 3539557728 is 8277559353.

3539557728 is a `hidden beast` number, since 35 + 39 + 5 + 577 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3539557727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11529351 + ... + 11529657.

It is an arithmetic number, because the mean of its divisors is an integer number (29289260).

Almost surely, 2^3539557728 is an apocalyptic number.

3539557728 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3539557728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6326480160).

3539557728 is an abundant number, since it is smaller than the sum of its proper divisors (9113402592).

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

3539557728 is a wasteful number, since it uses less digits than its factorization.

3539557728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 381 counting only the distinct ones).

The product of its digits is 7938000, while the sum is 54.

The square root of 3539557728 is about 59494.1823038186. The cubic root of 3539557728 is about 1523.9930972883.

The spelling of 3539557728 in words is "three billion, five hundred thirty-nine million, five hundred fifty-seven thousand, seven hundred twenty-eight".