81714340 has 48 divisors (see below), whose sum is σ = 176504832. Its totient is φ = 31764096.

The previous prime is 81714337. The next prime is 81714403. The reversal of 81714340 is 4341718.

It is a junction number, because it is equal to n+sod(n) for n = 81714299 and 81714308.

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, 134317 + ... + 134923.

It is an arithmetic number, because the mean of its divisors is an integer number (3677184).

Almost surely, 2^81714340 is an apocalyptic number.

It is an amenable number.

81714340 is an abundant number, since it is smaller than the sum of its proper divisors (94790492).

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

81714340 is a wasteful number, since it uses less digits than its factorization.

81714340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 81714340 is about 9039.5984424088. The cubic root of 81714340 is about 433.9430719500.

The spelling of 81714340 in words is "eighty-one million, seven hundred fourteen thousand, three hundred forty".