72230906 has 16 divisors (see below), whose sum is σ = 118326528. Its totient is φ = 32796000.

The previous prime is 72230903. The next prime is 72230923. The reversal of 72230906 is 60903227.

It is not an unprimeable number, because it can be changed into a prime (72230903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38711 + ... + 40533.

It is an arithmetic number, because the mean of its divisors is an integer number (7395408).

Almost surely, 2^72230906 is an apocalyptic number.

72230906 is a deficient number, since it is larger than the sum of its proper divisors (46095622).

72230906 is a wasteful number, since it uses less digits than its factorization.

72230906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 72230906 is about 8498.8767493122. The cubic root of 72230906 is about 416.4610158130.

The spelling of 72230906 in words is "seventy-two million, two hundred thirty thousand, nine hundred six".