73172322 has 20 divisors (see below), whose sum is σ = 163960566. Its totient is φ = 24390720.

The previous prime is 73172303. The next prime is 73172339. The reversal of 73172322 is 22327137.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 67223601 + 5948721 = 8199^2 + 2439^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 225679 + ... + 226002.

Almost surely, 2^73172322 is an apocalyptic number.

73172322 is an abundant number, since it is smaller than the sum of its proper divisors (90788244).

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

73172322 is a wasteful number, since it uses less digits than its factorization.

73172322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451695 (or 451686 counting only the distinct ones).

The product of its digits is 3528, while the sum is 27.

The square root of 73172322 is about 8554.0821833789. The cubic root of 73172322 is about 418.2625160499.

Adding to 73172322 its reverse (22327137), we get a palindrome (95499459).

The spelling of 73172322 in words is "seventy-three million, one hundred seventy-two thousand, three hundred twenty-two".