71589340 has 48 divisors (see below), whose sum is σ = 165150720. Its totient is φ = 25945920.

The previous prime is 71589337. The next prime is 71589373. The reversal of 71589340 is 4398517.

It is a self number, because there is not a number n which added to its sum of digits gives 71589340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4645 + ... + 12835.

It is an arithmetic number, because the mean of its divisors is an integer number (3440640).

Almost surely, 2^71589340 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 71589340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82575360).

71589340 is an abundant number, since it is smaller than the sum of its proper divisors (93561380).

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

71589340 is a wasteful number, since it uses less digits than its factorization.

71589340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8242 (or 8240 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 71589340 is about 8461.0483983960. The cubic root of 71589340 is about 415.2243234897.

The spelling of 71589340 in words is "seventy-one million, five hundred eighty-nine thousand, three hundred forty".