73213933 has 4 divisors (see below), whose sum is σ = 78845788. Its totient is φ = 67582080.

The previous prime is 73213927. The next prime is 73213937. The reversal of 73213933 is 33931237.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33931237 = 1847 ⋅18371.

It can be written as a sum of positive squares in 2 ways, for example, as 32228329 + 40985604 = 5677^2 + 6402^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73213933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73213895 and 73213904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73213937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2815908 + ... + 2815933.

It is an arithmetic number, because the mean of its divisors is an integer number (19711447).

Almost surely, 2^73213933 is an apocalyptic number.

It is an amenable number.

73213933 is a deficient number, since it is larger than the sum of its proper divisors (5631855).

73213933 is a wasteful number, since it uses less digits than its factorization.

73213933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631854.

The product of its digits is 10206, while the sum is 31.

The square root of 73213933 is about 8556.5140682406. The cubic root of 73213933 is about 418.3417856563.

The spelling of 73213933 in words is "seventy-three million, two hundred thirteen thousand, nine hundred thirty-three".