73173138 has 16 divisors (see below), whose sum is σ = 146456640. Its totient is φ = 24372656.

The previous prime is 73173137. The next prime is 73173167. The reversal of 73173138 is 83137137.

It is a junction number, because it is equal to n+sod(n) for n = 73173099 and 73173108.

It is not an unprimeable number, because it can be changed into a prime (73173131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5848 + ... + 13436.

It is an arithmetic number, because the mean of its divisors is an integer number (9153540).

Almost surely, 2^73173138 is an apocalyptic number.

73173138 is an abundant number, since it is smaller than the sum of its proper divisors (73283502).

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

73173138 is a wasteful number, since it uses less digits than its factorization.

73173138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9201.

The product of its digits is 10584, while the sum is 33.

The square root of 73173138 is about 8554.1298797715. The cubic root of 73173138 is about 418.2640708315.

The spelling of 73173138 in words is "seventy-three million, one hundred seventy-three thousand, one hundred thirty-eight".