72336622 has 4 divisors (see below), whose sum is σ = 108504936. Its totient is φ = 36168310.

The previous prime is 72336613. The next prime is 72336623. The reversal of 72336622 is 22663327.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) 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 not an unprimeable number, because it can be changed into a prime (72336623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18084154 + ... + 18084157.

It is an arithmetic number, because the mean of its divisors is an integer number (27126234).

Almost surely, 2^72336622 is an apocalyptic number.

72336622 is a deficient number, since it is larger than the sum of its proper divisors (36168314).

72336622 is a wasteful number, since it uses less digits than its factorization.

72336622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36168313.

The product of its digits is 18144, while the sum is 31.

The square root of 72336622 is about 8505.0938854312. The cubic root of 72336622 is about 416.6640920019.

Adding to 72336622 its reverse (22663327), we get a palindrome (94999949).

The spelling of 72336622 in words is "seventy-two million, three hundred thirty-six thousand, six hundred twenty-two".