73221108 has 48 divisors (see below), whose sum is σ = 182173824. Its totient is φ = 22809600.

The previous prime is 73221103. The next prime is 73221119. The reversal of 73221108 is 80112237.

It is a super-2 number, since 2×73221108² = 10722661313495328, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73221103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29616 + ... + 31992.

It is an arithmetic number, because the mean of its divisors is an integer number (3795288).

Almost surely, 2^73221108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73221108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91086912).

73221108 is an abundant number, since it is smaller than the sum of its proper divisors (108952716).

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

73221108 is a wasteful number, since it uses less digits than its factorization.

73221108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552 (or 2550 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 73221108 is about 8556.9333291782. The cubic root of 73221108 is about 418.3554511074.

The spelling of 73221108 in words is "seventy-three million, two hundred twenty-one thousand, one hundred eight".