73023173 has 4 divisors (see below), whose sum is σ = 74804268. Its totient is φ = 71242080.

The previous prime is 73023149. The next prime is 73023187. The reversal of 73023173 is 37132037.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28494244 + 44528929 = 5338^2 + 6673^2 .

It is a cyclic number.

It is not a de Polignac number, because 73023173 - 2¹² = 73019077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73023103) 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, 890486 + ... + 890567.

It is an arithmetic number, because the mean of its divisors is an integer number (18701067).

Almost surely, 2^73023173 is an apocalyptic number.

It is an amenable number.

73023173 is a deficient number, since it is larger than the sum of its proper divisors (1781095).

73023173 is a wasteful number, since it uses less digits than its factorization.

73023173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781094.

The product of its (nonzero) digits is 2646, while the sum is 26.

The square root of 73023173 is about 8545.3597349673. The cubic root of 73023173 is about 417.9781377118.

The spelling of 73023173 in words is "seventy-three million, twenty-three thousand, one hundred seventy-three".