73221250 has 40 divisors (see below), whose sum is σ = 144516240. Its totient is φ = 27738000.

The previous prime is 73221233. The next prime is 73221251. The reversal of 73221250 is 5212237.

It is a super-2 number, since 2×73221250² = 10722702903125000, which contains 22 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (73221251) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22209 + ... + 25291.

It is an arithmetic number, because the mean of its divisors is an integer number (3612906).

Almost surely, 2^73221250 is an apocalyptic number.

73221250 is a deficient number, since it is larger than the sum of its proper divisors (71294990).

73221250 is a wasteful number, since it uses less digits than its factorization.

73221250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124 (or 3109 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 73221250 is about 8556.9416265392. The cubic root of 73221250 is about 418.3557215505.

Adding to 73221250 its reverse (5212237), we get a palindrome (78433487).

The spelling of 73221250 in words is "seventy-three million, two hundred twenty-one thousand, two hundred fifty".