72352815 has 8 divisors (see below), whose sum is σ = 115764528. Its totient is φ = 38588160.

The previous prime is 72352807. The next prime is 72352837. The reversal of 72352815 is 51825327.

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

It is not a de Polignac number, because 72352815 - 2³ = 72352807 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2411746 + ... + 2411775.

It is an arithmetic number, because the mean of its divisors is an integer number (14470566).

Almost surely, 2^72352815 is an apocalyptic number.

72352815 is a deficient number, since it is larger than the sum of its proper divisors (43411713).

72352815 is a wasteful number, since it uses less digits than its factorization.

72352815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823529.

The product of its digits is 16800, while the sum is 33.

The square root of 72352815 is about 8506.0457910830. The cubic root of 72352815 is about 416.6951806264.

The spelling of 72352815 in words is "seventy-two million, three hundred fifty-two thousand, eight hundred fifteen".