73140505 has 8 divisors (see below), whose sum is σ = 87815232. Its totient is φ = 58481328.

The previous prime is 73140499. The next prime is 73140517. The reversal of 73140505 is 50504137.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73140505 - 2³ = 73140497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73140505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13732 + ... + 18298.

It is an arithmetic number, because the mean of its divisors is an integer number (10976904).

Almost surely, 2^73140505 is an apocalyptic number.

It is an amenable number.

73140505 is a deficient number, since it is larger than the sum of its proper divisors (14674727).

73140505 is a wasteful number, since it uses less digits than its factorization.

73140505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7775.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 73140505 is about 8552.2222258311. Note that the first 5 decimals coincide. The cubic root of 73140505 is about 418.2018838899.

The spelling of 73140505 in words is "seventy-three million, one hundred forty thousand, five hundred five".