71682340 has 24 divisors (see below), whose sum is σ = 151381440. Its totient is φ = 28511328.

The previous prime is 71682301. The next prime is 71682343. The reversal of 71682340 is 4328617.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (71682343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6432 + ... + 13591.

It is an arithmetic number, because the mean of its divisors is an integer number (6307560).

Almost surely, 2^71682340 is an apocalyptic number.

It is an amenable number.

71682340 is an abundant number, since it is smaller than the sum of its proper divisors (79699100).

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

71682340 is a wasteful number, since it uses less digits than its factorization.

71682340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20211 (or 20209 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 71682340 is about 8466.5423875393. The cubic root of 71682340 is about 415.4040483505.

The spelling of 71682340 in words is "seventy-one million, six hundred eighty-two thousand, three hundred forty".