7528280538 has 8 divisors (see below), whose sum is σ = 15056561088. Its totient is φ = 2509426844.

The previous prime is 7528280533. The next prime is 7528280569. The reversal of 7528280538 is 8350828257.

It is a sphenic number, since it is the product of 3 distinct primes.

7528280538 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (7528280533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627356706 + ... + 627356717.

It is an arithmetic number, because the mean of its divisors is an integer number (1882070136).

Almost surely, 2^7528280538 is an apocalyptic number.

7528280538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7528280538 is a wasteful number, since it uses less digits than its factorization.

7528280538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254713428.

The product of its (nonzero) digits is 1075200, while the sum is 48.

The square root of 7528280538 is about 86765.6645107960. The cubic root of 7528280538 is about 1959.8910582583.

The spelling of 7528280538 in words is "seven billion, five hundred twenty-eight million, two hundred eighty thousand, five hundred thirty-eight".