73983720 has 128 divisors (see below), whose sum is σ = 240220800. Its totient is φ = 18164736.

The previous prime is 73983713. The next prime is 73983751. The reversal of 73983720 is 2738937.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 83922 + ... + 84798.

It is an arithmetic number, because the mean of its divisors is an integer number (1876725).

Almost surely, 2^73983720 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 73983720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120110400).

73983720 is an abundant number, since it is smaller than the sum of its proper divisors (166237080).

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

73983720 is a wasteful number, since it uses less digits than its factorization.

73983720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 73983720 is about 8601.3789592135. The cubic root of 73983720 is about 419.8028553221.

The spelling of 73983720 in words is "seventy-three million, nine hundred eighty-three thousand, seven hundred twenty".