71000430 has 32 divisors (see below), whose sum is σ = 171307008. Its totient is φ = 18832800.

The previous prime is 71000429. The next prime is 71000453. The reversal of 71000430 is 3400017.

It is a super-2 number, since 2×71000430² = 10082122120369800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

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, 466 + ... + 11925.

It is an arithmetic number, because the mean of its divisors is an integer number (5353344).

Almost surely, 2^71000430 is an apocalyptic number.

71000430 is an abundant number, since it is smaller than the sum of its proper divisors (100306578).

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

71000430 is a wasteful number, since it uses less digits than its factorization.

71000430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12592.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 71000430 is about 8426.1752889434. The cubic root of 71000430 is about 414.0826108803.

Adding to 71000430 its reverse (3400017), we get a palindrome (74400447).

The spelling of 71000430 in words is "seventy-one million, four hundred thirty", and thus it is an aban number.