82716390 has 80 divisors (see below), whose sum is σ = 235537632. Its totient is φ = 20756736.

The previous prime is 82716383. The next prime is 82716409. The reversal of 82716390 is 9361728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10767 + ... + 16773.

Almost surely, 2^82716390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82716390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117768816).

82716390 is an abundant number, since it is smaller than the sum of its proper divisors (152821242).

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

82716390 is a wasteful number, since it uses less digits than its factorization.

82716390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6043 (or 6034 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 82716390 is about 9094.8551390333. The cubic root of 82716390 is about 435.7096620745.

The spelling of 82716390 in words is "eighty-two million, seven hundred sixteen thousand, three hundred ninety".