7539449328 has 160 divisors (see below), whose sum is σ = 22323571200. Its totient is φ = 2434752000.

The previous prime is 7539449251. The next prime is 7539449329. The reversal of 7539449328 is 8239449357.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7539449329) 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 31 ways as a sum of consecutive naturals, for example, 2673103 + ... + 2675921.

It is an arithmetic number, because the mean of its divisors is an integer number (139522320).

Almost surely, 2^7539449328 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 7539449328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11161785600).

7539449328 is an abundant number, since it is smaller than the sum of its proper divisors (14784121872).

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

7539449328 is a wasteful number, since it uses less digits than its factorization.

7539449328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028 (or 3016 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 7539449328 is about 86830.0024645859. The cubic root of 7539449328 is about 1960.8597963154.

It can be divided in two parts, 75 and 39449328, that added together give a triangular number (39449403 = T₈₈₈₂).

The spelling of 7539449328 in words is "seven billion, five hundred thirty-nine million, four hundred forty-nine thousand, three hundred twenty-eight".