72108712 has 16 divisors (see below), whose sum is σ = 145604340. Its totient is φ = 33280896.

The previous prime is 72108677. The next prime is 72108719. The reversal of 72108712 is 21780127.

It can be written as a sum of positive squares in 2 ways, for example, as 70795396 + 1313316 = 8414^2 + 1146^2 .

It is not an unprimeable number, because it can be changed into a prime (72108719) 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, 346573 + ... + 346780.

Almost surely, 2^72108712 is an apocalyptic number.

It is an amenable number.

72108712 is an abundant number, since it is smaller than the sum of its proper divisors (73495628).

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

72108712 is a wasteful number, since it uses less digits than its factorization.

72108712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693372 (or 693368 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 72108712 is about 8491.6848740400. The cubic root of 72108712 is about 416.2260390155.

Adding to 72108712 its reverse (21780127), we get a palindrome (93888839).

The spelling of 72108712 in words is "seventy-two million, one hundred eight thousand, seven hundred twelve".