72283305 has 8 divisors (see below), whose sum is σ = 115653312. Its totient is φ = 38551088.

The previous prime is 72283261. The next prime is 72283313. The reversal of 72283305 is 50338227.

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 72283305 - 2⁷ = 72283177 is a prime.

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, 2409429 + ... + 2409458.

It is an arithmetic number, because the mean of its divisors is an integer number (14456664).

Almost surely, 2^72283305 is an apocalyptic number.

It is an amenable number.

72283305 is a deficient number, since it is larger than the sum of its proper divisors (43370007).

72283305 is a wasteful number, since it uses less digits than its factorization.

72283305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818895.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 72283305 is about 8501.9588919260. The cubic root of 72283305 is about 416.5616969353.

The spelling of 72283305 in words is "seventy-two million, two hundred eighty-three thousand, three hundred five".