72012715 has 8 divisors (see below), whose sum is σ = 86463360. Its totient is φ = 57578112.

The previous prime is 72012667. The next prime is 72012719. The reversal of 72012715 is 51721027.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72012715 - 2⁷ = 72012587 is a prime.

It is a super-2 number, since 2×72012715² = 10371662243342450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72012715.

It is not an unprimeable number, because it can be changed into a prime (72012719) 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, 10947 + ... + 16243.

It is an arithmetic number, because the mean of its divisors is an integer number (10807920).

Almost surely, 2^72012715 is an apocalyptic number.

72012715 is a deficient number, since it is larger than the sum of its proper divisors (14450645).

72012715 is a wasteful number, since it uses less digits than its factorization.

72012715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8021.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 72012715 is about 8486.0305797234. The cubic root of 72012715 is about 416.0412523040.

It can be divided in two parts, 72012 and 715, that added together give a palindrome (72727).

The spelling of 72012715 in words is "seventy-two million, twelve thousand, seven hundred fifteen".