7252708538 has 32 divisors (see below), whose sum is σ = 12243104640. Its totient is φ = 3201984000.

The previous prime is 7252708511. The next prime is 7252708549. The reversal of 7252708538 is 8358072527.

It is a happy number.

It is a super-2 number, since 2×7252708538² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7252708492 and 7252708501.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12038 + ... + 121038.

It is an arithmetic number, because the mean of its divisors is an integer number (382597020).

Almost surely, 2^7252708538 is an apocalyptic number.

7252708538 is a deficient number, since it is larger than the sum of its proper divisors (4990396102).

7252708538 is a wasteful number, since it uses less digits than its factorization.

7252708538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109142.

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 7252708538 is about 85162.8354271979. The cubic root of 7252708538 is about 1935.6793113740.

The spelling of 7252708538 in words is "seven billion, two hundred fifty-two million, seven hundred eight thousand, five hundred thirty-eight".