72329306 has 16 divisors (see below), whose sum is σ = 128269440. Its totient is φ = 29929200.

The previous prime is 72329303. The next prime is 72329353. The reversal of 72329306 is 60392327.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72329303) by changing a digit.

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, 88670 + ... + 89481.

It is an arithmetic number, because the mean of its divisors is an integer number (8016840).

Almost surely, 2^72329306 is an apocalyptic number.

72329306 is a deficient number, since it is larger than the sum of its proper divisors (55940134).

72329306 is a wasteful number, since it uses less digits than its factorization.

72329306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178189.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 72329306 is about 8504.6637793625. The cubic root of 72329306 is about 416.6500446347.

The spelling of 72329306 in words is "seventy-two million, three hundred twenty-nine thousand, three hundred six".