72817235 has 8 divisors (see below), whose sum is σ = 88010160. Its totient is φ = 57834144.

The previous prime is 72817211. The next prime is 72817243. The reversal of 72817235 is 53271827.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72817235 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72817195 and 72817204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51692 + ... + 53081.

It is an arithmetic number, because the mean of its divisors is an integer number (11001270).

Almost surely, 2^72817235 is an apocalyptic number.

72817235 is a deficient number, since it is larger than the sum of its proper divisors (15192925).

72817235 is a wasteful number, since it uses less digits than its factorization.

72817235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104917.

The product of its digits is 23520, while the sum is 35.

The square root of 72817235 is about 8533.3015298887. The cubic root of 72817235 is about 417.5848441717.

The spelling of 72817235 in words is "seventy-two million, eight hundred seventeen thousand, two hundred thirty-five".