71289234 has 40 divisors (see below), whose sum is σ = 161359308. Its totient is φ = 23522400.

The previous prime is 71289233. The next prime is 71289247. The reversal of 71289234 is 43298217.

It can be written as a sum of positive squares in 2 ways, for example, as 43758225 + 27531009 = 6615^2 + 5247^2 .

It is not an unprimeable number, because it can be changed into a prime (71289233) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14184 + ... + 18540.

Almost surely, 2^71289234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71289234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80679654).

71289234 is an abundant number, since it is smaller than the sum of its proper divisors (90070074).

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

71289234 is a wasteful number, since it uses less digits than its factorization.

71289234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4472 (or 4463 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 71289234 is about 8443.2952098100. The cubic root of 71289234 is about 414.6432973060.

The spelling of 71289234 in words is "seventy-one million, two hundred eighty-nine thousand, two hundred thirty-four".