7512985728 has 48 divisors (see below), whose sum is σ = 21619402350. Its totient is φ = 2504328192.

The previous prime is 7512985709. The next prime is 7512985741. The reversal of 7512985728 is 8275892157.

It can be written as a sum of positive squares in only one way, i.e., 5632202304 + 1880783424 = 75048^2 + 43368^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3259693 + ... + 3261996.

Almost surely, 2^7512985728 is an apocalyptic number.

It is an amenable number.

7512985728 is an abundant number, since it is smaller than the sum of its proper divisors (14106416622).

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

7512985728 is a wasteful number, since it uses less digits than its factorization.

7512985728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6521709 (or 6521694 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 54.

The square root of 7512985728 is about 86677.4810893810. The cubic root of 7512985728 is about 1958.5628893413.

The spelling of 7512985728 in words is "seven billion, five hundred twelve million, nine hundred eighty-five thousand, seven hundred twenty-eight".