72710122 has 16 divisors (see below), whose sum is σ = 115790472. Its totient is φ = 34124800.

The previous prime is 72710089. The next prime is 72710123. The reversal of 72710122 is 22101727.

It can be written as a sum of positive squares in 4 ways, for example, as 58201641 + 14508481 = 7629^2 + 3809^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72710093 and 72710102.

It is not an unprimeable number, because it can be changed into a prime (72710123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10968 + ... + 16300.

Almost surely, 2^72710122 is an apocalyptic number.

72710122 is a deficient number, since it is larger than the sum of its proper divisors (43080350).

72710122 is a wasteful number, since it uses less digits than its factorization.

72710122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5753.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 72710122 is about 8527.0230444159. The cubic root of 72710122 is about 417.3799901280.

Adding to 72710122 its reverse (22101727), we get a palindrome (94811849).

The spelling of 72710122 in words is "seventy-two million, seven hundred ten thousand, one hundred twenty-two".