7528228257 has 32 divisors (see below), whose sum is σ = 11094589440. Its totient is φ = 4502731520.

The previous prime is 7528228249. The next prime is 7528228259.

7528228257 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 7528228257 - 2³ = 7528228249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7528228259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 887008 + ... + 895454.

It is an arithmetic number, because the mean of its divisors is an integer number (346705920).

Almost surely, 2^7528228257 is an apocalyptic number.

It is an amenable number.

7528228257 is a deficient number, since it is larger than the sum of its proper divisors (3566361183).

7528228257 is a wasteful number, since it uses less digits than its factorization.

7528228257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8813.

The product of its digits is 1254400, while the sum is 48.

The square root of 7528228257 is about 86765.3632332626. The cubic root of 7528228257 is about 1959.8865213524.

The spelling of 7528228257 in words is "seven billion, five hundred twenty-eight million, two hundred twenty-eight thousand, two hundred fifty-seven".