71018430 has 32 divisors (see below), whose sum is σ = 194793984. Its totient is φ = 16232736.

The previous prime is 71018417. The next prime is 71018443. The reversal of 71018430 is 3481017.

It is an interprime number because it is at equal distance from previous prime (71018417) and next prime (71018443).

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 71018430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168882 + ... + 169301.

It is an arithmetic number, because the mean of its divisors is an integer number (6087312).

Almost surely, 2^71018430 is an apocalyptic number.

71018430 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71018430 is an abundant number, since it is smaller than the sum of its proper divisors (123775554).

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

71018430 is a wasteful number, since it uses less digits than its factorization.

71018430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338200.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 71018430 is about 8427.2433215139. The cubic root of 71018430 is about 414.1176006084.

Adding to 71018430 its reverse (3481017), we get a palindrome (74499447).

The spelling of 71018430 in words is "seventy-one million, eighteen thousand, four hundred thirty".