73290309 has 8 divisors (see below), whose sum is σ = 97772832. Its totient is φ = 48834000.

The previous prime is 73290299. The next prime is 73290311. The reversal of 73290309 is 90309237.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73290309 - 2¹¹ = 73288261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73290309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73290319) 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, 1327 + ... + 12179.

It is an arithmetic number, because the mean of its divisors is an integer number (12221604).

Almost surely, 2^73290309 is an apocalyptic number.

It is an amenable number.

73290309 is a deficient number, since it is larger than the sum of its proper divisors (24482523).

73290309 is a wasteful number, since it uses less digits than its factorization.

73290309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13107.

The product of its (nonzero) digits is 10206, while the sum is 33.

The square root of 73290309 is about 8560.9759373567. The cubic root of 73290309 is about 418.4872050090.

The spelling of 73290309 in words is "seventy-three million, two hundred ninety thousand, three hundred nine".