73221310 has 8 divisors (see below), whose sum is σ = 131798376. Its totient is φ = 29288520.

The previous prime is 73221299. The next prime is 73221311. The reversal of 73221310 is 1312237.

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

It is a super-2 number, since 2×73221310² = 10722720476232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73221311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3661056 + ... + 3661075.

It is an arithmetic number, because the mean of its divisors is an integer number (16474797).

Almost surely, 2^73221310 is an apocalyptic number.

73221310 is a deficient number, since it is larger than the sum of its proper divisors (58577066).

73221310 is a wasteful number, since it uses less digits than its factorization.

73221310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7322138.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 73221310 is about 8556.9451324640. The cubic root of 73221310 is about 418.3558358221.

Adding to 73221310 its reverse (1312237), we get a palindrome (74533547).

The spelling of 73221310 in words is "seventy-three million, two hundred twenty-one thousand, three hundred ten".