73044920 has 64 divisors (see below), whose sum is σ = 187427520. Its totient is φ = 25380864.

The previous prime is 73044913. The next prime is 73044929. The reversal of 73044920 is 2944037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73044929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4709 + ... + 12971.

It is an arithmetic number, because the mean of its divisors is an integer number (2928555).

Almost surely, 2^73044920 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 73044920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93713760).

73044920 is an abundant number, since it is smaller than the sum of its proper divisors (114382600).

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

73044920 is a wasteful number, since it uses less digits than its factorization.

73044920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8304 (or 8300 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 73044920 is about 8546.6320852134. The cubic root of 73044920 is about 418.0196262238.

Adding to 73044920 its reverse (2944037), we get a palindrome (75988957).

The spelling of 73044920 in words is "seventy-three million, forty-four thousand, nine hundred twenty".