73783720 has 64 divisors (see below), whose sum is σ = 172915200. Its totient is φ = 28304640.

The previous prime is 73783691. The next prime is 73783733. The reversal of 73783720 is 2738737.

It is a self number, because there is not a number n which added to its sum of digits gives 73783720.

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 15 ways as a sum of consecutive naturals, for example, 194491 + ... + 194869.

It is an arithmetic number, because the mean of its divisors is an integer number (2701800).

Almost surely, 2^73783720 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 73783720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86457600).

73783720 is an abundant number, since it is smaller than the sum of its proper divisors (99131480).

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

73783720 is a wasteful number, since it uses less digits than its factorization.

73783720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 73783720 is about 8589.7450486030. The cubic root of 73783720 is about 419.4242299449.

The spelling of 73783720 in words is "seventy-three million, seven hundred eighty-three thousand, seven hundred twenty".