7282572538 has 8 divisors (see below), whose sum is σ = 10924236180. Its totient is φ = 3641160480.

The previous prime is 7282572533. The next prime is 7282572541. The reversal of 7282572538 is 8352752827.

It can be written as a sum of positive squares in 2 ways, for example, as 7117115769 + 165456769 = 84363^2 + 12863^2 .

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

It is a super-2 number, since 2×7282572538² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7282572491 and 7282572500.

It is not an unprimeable number, because it can be changed into a prime (7282572533) 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, 50008 + ... + 130636.

Almost surely, 2^7282572538 is an apocalyptic number.

7282572538 is a deficient number, since it is larger than the sum of its proper divisors (3641663642).

7282572538 is a wasteful number, since it uses less digits than its factorization.

7282572538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125792.

The product of its digits is 1881600, while the sum is 49.

The square root of 7282572538 is about 85337.9900044523. The cubic root of 7282572538 is about 1938.3324794878.

The spelling of 7282572538 in words is "seven billion, two hundred eighty-two million, five hundred seventy-two thousand, five hundred thirty-eight".