71306030 has 32 divisors (see below), whose sum is σ = 132641280. Its totient is φ = 27578880.

The previous prime is 71306029. The next prime is 71306057. The reversal of 71306030 is 3060317.

It is a junction number, because it is equal to n+sod(n) for n = 71305993 and 71306011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70166 + ... + 71174.

It is an arithmetic number, because the mean of its divisors is an integer number (4145040).

Almost surely, 2^71306030 is an apocalyptic number.

71306030 is a deficient number, since it is larger than the sum of its proper divisors (61335250).

71306030 is a wasteful number, since it uses less digits than its factorization.

71306030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 71306030 is about 8444.2897865954. The cubic root of 71306030 is about 414.6758585664.

Adding to 71306030 its reverse (3060317), we get a palindrome (74366347).

The spelling of 71306030 in words is "seventy-one million, three hundred six thousand, thirty".