71344284 has 48 divisors (see below), whose sum is σ = 182480256. Its totient is φ = 21515200.

The previous prime is 71344277. The next prime is 71344313. The reversal of 71344284 is 48244317.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 28774 + ... + 31154.

It is an arithmetic number, because the mean of its divisors is an integer number (3801672).

Almost surely, 2^71344284 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 71344284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91240128).

71344284 is an abundant number, since it is smaller than the sum of its proper divisors (111135972).

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

71344284 is a wasteful number, since it uses less digits than its factorization.

71344284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626 (or 2624 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 71344284 is about 8446.5545638444. The cubic root of 71344284 is about 414.7499999092.

Adding to 71344284 its sum of digits (33), we get a palindrome (71344317).

The spelling of 71344284 in words is "seventy-one million, three hundred forty-four thousand, two hundred eighty-four".