8730405 has 24 divisors (see below), whose sum is σ = 15930720. Its totient is φ = 4410720.

The previous prime is 8730377. The next prime is 8730467. The reversal of 8730405 is 5040378.

It is not a de Polignac number, because 8730405 - 2⁶ = 8730341 is a prime.

It is a Curzon number.

8730405 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4251 + ... + 5960.

It is an arithmetic number, because the mean of its divisors is an integer number (663780).

Almost surely, 2^8730405 is an apocalyptic number.

It is an amenable number.

8730405 is a deficient number, since it is larger than the sum of its proper divisors (7200315).

8730405 is a wasteful number, since it uses less digits than its factorization.

8730405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10241 (or 10238 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 8730405 is about 2954.7258756101. The cubic root of 8730405 is about 205.9103279553.

Subtracting from 8730405 its sum of digits (27), we obtain a palindrome (8730378).

The spelling of 8730405 in words is "eight million, seven hundred thirty thousand, four hundred five".