73215306 has 32 divisors (see below), whose sum is σ = 162986880. Its totient is φ = 24362208.

The previous prime is 73215301. The next prime is 73215319. The reversal of 73215306 is 60351237.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 73215306.

It is not an unprimeable number, because it can be changed into a prime (73215301) 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 15 ways as a sum of consecutive naturals, for example, 49875 + ... + 51321.

It is an arithmetic number, because the mean of its divisors is an integer number (5093340).

Almost surely, 2^73215306 is an apocalyptic number.

73215306 is an abundant number, since it is smaller than the sum of its proper divisors (89771574).

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

73215306 is a wasteful number, since it uses less digits than its factorization.

73215306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395 (or 2389 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 73215306 is about 8556.5942991356. The cubic root of 73215306 is about 418.3444007308.

The spelling of 73215306 in words is "seventy-three million, two hundred fifteen thousand, three hundred six".