82463640 has 128 divisors (see below), whose sum is σ = 285327360. Its totient is φ = 18676224.

The previous prime is 82463581. The next prime is 82463657. The reversal of 82463640 is 4636428.

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 31 ways as a sum of consecutive naturals, for example, 106294 + ... + 107066.

It is an arithmetic number, because the mean of its divisors is an integer number (2229120).

Almost surely, 2^82463640 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 82463640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142663680).

82463640 is an abundant number, since it is smaller than the sum of its proper divisors (202863720).

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

82463640 is a wasteful number, since it uses less digits than its factorization.

82463640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 82463640 is about 9080.9492895842. The cubic root of 82463640 is about 435.2654213168.

The spelling of 82463640 in words is "eighty-two million, four hundred sixty-three thousand, six hundred forty".