72345306 has 16 divisors (see below), whose sum is σ = 157844448. Its totient is φ = 21922800.

The previous prime is 72345239. The next prime is 72345337. The reversal of 72345306 is 60354327.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548005 + ... + 548136.

It is an arithmetic number, because the mean of its divisors is an integer number (9865278).

Almost surely, 2^72345306 is an apocalyptic number.

72345306 is an abundant number, since it is smaller than the sum of its proper divisors (85499142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72345306 is a wasteful number, since it uses less digits than its factorization.

72345306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096157.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 72345306 is about 8505.6043876964. The cubic root of 72345306 is about 416.6807648208.

The spelling of 72345306 in words is "seventy-two million, three hundred forty-five thousand, three hundred six".