73445816 has 8 divisors (see below), whose sum is σ = 137710920. Its totient is φ = 36722904.

The previous prime is 73445807. The next prime is 73445833. The reversal of 73445816 is 61854437.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 73445816.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 4590356 + ... + 4590371.

It is an arithmetic number, because the mean of its divisors is an integer number (17213865).

Almost surely, 2^73445816 is an apocalyptic number.

It is an amenable number.

73445816 is a deficient number, since it is larger than the sum of its proper divisors (64265104).

73445816 is a wasteful number, since it uses less digits than its factorization.

73445816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9180733 (or 9180729 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 73445816 is about 8570.0534420737. The cubic root of 73445816 is about 418.7829772500.

The spelling of 73445816 in words is "seventy-three million, four hundred forty-five thousand, eight hundred sixteen".