71340390 has 72 divisors (see below), whose sum is σ = 203911344. Its totient is φ = 17292000.

The previous prime is 71340371. The next prime is 71340439. The reversal of 71340390 is 9304317.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7615 + ... + 14165.

It is an arithmetic number, because the mean of its divisors is an integer number (2832102).

Almost surely, 2^71340390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71340390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101955672).

71340390 is an abundant number, since it is smaller than the sum of its proper divisors (132570954).

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

71340390 is a wasteful number, since it uses less digits than its factorization.

71340390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6586 (or 6572 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 71340390 is about 8446.3240525095. The cubic root of 71340390 is about 414.7424540307.

The spelling of 71340390 in words is "seventy-one million, three hundred forty thousand, three hundred ninety".