73220300 has 72 divisors (see below), whose sum is σ = 169520400. Its totient is φ = 27371520.

The previous prime is 73220297. The next prime is 73220311. The reversal of 73220300 is 302237.

It is a super-2 number, since 2×73220300² = 10722424664180000, 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 23 ways as a sum of consecutive naturals, for example, 168884 + ... + 169316.

It is an arithmetic number, because the mean of its divisors is an integer number (2354450).

Almost surely, 2^73220300 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 73220300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84760200).

73220300 is an abundant number, since it is smaller than the sum of its proper divisors (96300100).

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

73220300 is a wasteful number, since it uses less digits than its factorization.

73220300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 17.

The square root of 73220300 is about 8556.8861158718. The cubic root of 73220300 is about 418.3539122412.

Adding to 73220300 its reverse (302237), we get a palindrome (73522537).

The spelling of 73220300 in words is "seventy-three million, two hundred twenty thousand, three hundred".