72255806 has 8 divisors (see below), whose sum is σ = 123867120. Its totient is φ = 30966768.

The previous prime is 72255769. The next prime is 72255847. The reversal of 72255806 is 60855227.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2580551 + ... + 2580578.

It is an arithmetic number, because the mean of its divisors is an integer number (15483390).

Almost surely, 2^72255806 is an apocalyptic number.

72255806 is a deficient number, since it is larger than the sum of its proper divisors (51611314).

72255806 is a wasteful number, since it uses less digits than its factorization.

72255806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5161138.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 72255806 is about 8500.3415225507. The cubic root of 72255806 is about 416.5088655425.

It can be divided in two parts, 7225 and 5806, that added together give a palindrome (13031).

The spelling of 72255806 in words is "seventy-two million, two hundred fifty-five thousand, eight hundred six".