71170730 has 16 divisors (see below), whose sum is σ = 132240384. Its totient is φ = 27549840.

The previous prime is 71170703. The next prime is 71170733. The reversal of 71170730 is 3707117.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71170730.

It is not an unprimeable number, because it can be changed into a prime (71170733) 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, 114482 + ... + 115101.

It is an arithmetic number, because the mean of its divisors is an integer number (8265024).

Almost surely, 2^71170730 is an apocalyptic number.

71170730 is a deficient number, since it is larger than the sum of its proper divisors (61069654).

71170730 is a wasteful number, since it uses less digits than its factorization.

71170730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229621.

The product of its (nonzero) digits is 1029, while the sum is 26.

The square root of 71170730 is about 8436.2746517642. The cubic root of 71170730 is about 414.4134162124.

Adding to 71170730 its reverse (3707117), we get a palindrome (74877847).

The spelling of 71170730 in words is "seventy-one million, one hundred seventy thousand, seven hundred thirty".