73213973 has 16 divisors (see below), whose sum is σ = 88320000. Its totient is φ = 59288112.

The previous prime is 73213949. The next prime is 73213979. The reversal of 73213973 is 37931237.

It is a cyclic number.

It is not a de Polignac number, because 73213973 - 2¹⁴ = 73197589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73213979) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 79208 + ... + 80126.

It is an arithmetic number, because the mean of its divisors is an integer number (5520000).

Almost surely, 2^73213973 is an apocalyptic number.

It is an amenable number.

73213973 is a deficient number, since it is larger than the sum of its proper divisors (15106027).

73213973 is a wasteful number, since it uses less digits than its factorization.

73213973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544.

The product of its digits is 23814, while the sum is 35.

The square root of 73213973 is about 8556.5164056408. The cubic root of 73213973 is about 418.3418618424.

The spelling of 73213973 in words is "seventy-three million, two hundred thirteen thousand, nine hundred seventy-three".