73067720 has 32 divisors (see below), whose sum is σ = 179349120. Its totient is φ = 26569920.

The previous prime is 73067693. The next prime is 73067723. The reversal of 73067720 is 2776037.

It is not an unprimeable number, because it can be changed into a prime (73067723) 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 7 ways as a sum of consecutive naturals, for example, 82592 + ... + 83471.

It is an arithmetic number, because the mean of its divisors is an integer number (5604660).

Almost surely, 2^73067720 is an apocalyptic number.

It is an amenable number.

73067720 is an abundant number, since it is smaller than the sum of its proper divisors (106281400).

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

73067720 is a wasteful number, since it uses less digits than its factorization.

73067720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166085 (or 166081 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 73067720 is about 8547.9658398943. The cubic root of 73067720 is about 418.0631147876.

The spelling of 73067720 in words is "seventy-three million, sixty-seven thousand, seven hundred twenty".