71002340 has 24 divisors (see below), whose sum is σ = 149893632. Its totient is φ = 28250720.

The previous prime is 71002333. The next prime is 71002367. The reversal of 71002340 is 4320017.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 5474 + ... + 13113.

It is an arithmetic number, because the mean of its divisors is an integer number (6245568).

Almost surely, 2^71002340 is an apocalyptic number.

It is an amenable number.

71002340 is an abundant number, since it is smaller than the sum of its proper divisors (78891292).

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

71002340 is a wasteful number, since it uses less digits than its factorization.

71002340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18787 (or 18785 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 71002340 is about 8426.2886254863. The cubic root of 71002340 is about 414.0863239597.

Adding to 71002340 its reverse (4320017), we get a palindrome (75322357).

The spelling of 71002340 in words is "seventy-one million, two thousand, three hundred forty".