72806582 has 8 divisors (see below), whose sum is σ = 109663752. Its totient is φ = 36252000.

The previous prime is 72806581. The next prime is 72806621. The reversal of 72806582 is 28560827.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72806581) 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, 75044 + ... + 76007.

It is an arithmetic number, because the mean of its divisors is an integer number (13707969).

Almost surely, 2^72806582 is an apocalyptic number.

72806582 is a deficient number, since it is larger than the sum of its proper divisors (36857170).

72806582 is a wasteful number, since it uses less digits than its factorization.

72806582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151294.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 72806582 is about 8532.6773055120. The cubic root of 72806582 is about 417.5644792664.

The spelling of 72806582 in words is "seventy-two million, eight hundred six thousand, five hundred eighty-two".