73221260 has 48 divisors (see below), whose sum is σ = 179832576. Its totient is φ = 24518592.

The previous prime is 73221257. The next prime is 73221283. The reversal of 73221260 is 6212237.

It is a super-2 number, since 2×73221260² = 10722705831975200, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 62 + ... + 12101.

It is an arithmetic number, because the mean of its divisors is an integer number (3746512).

Almost surely, 2^73221260 is an apocalyptic number.

73221260 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73221260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89916288).

73221260 is an abundant number, since it is smaller than the sum of its proper divisors (106611316).

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

73221260 is a wasteful number, since it uses less digits than its factorization.

73221260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12222 (or 12220 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 73221260 is about 8556.9422108601. The cubic root of 73221260 is about 418.3557405958.

Adding to 73221260 its reverse (6212237), we get a palindrome (79433497).

The spelling of 73221260 in words is "seventy-three million, two hundred twenty-one thousand, two hundred sixty".