71282340 has 72 divisors (see below), whose sum is σ = 217945728. Its totient is φ = 18857280.

The previous prime is 71282329. The next prime is 71282353. The reversal of 71282340 is 4328217.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22069 + ... + 25091.

It is an arithmetic number, because the mean of its divisors is an integer number (3027024).

Almost surely, 2^71282340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71282340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108972864).

71282340 is an abundant number, since it is smaller than the sum of its proper divisors (146663388).

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

71282340 is a wasteful number, since it uses less digits than its factorization.

71282340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169 (or 3164 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 71282340 is about 8442.8869470105. The cubic root of 71282340 is about 414.6299308976.

The spelling of 71282340 in words is "seventy-one million, two hundred eighty-two thousand, three hundred forty".