82600140 has 96 divisors (see below), whose sum is σ = 265950720. Its totient is φ = 18763776.

The previous prime is 82600139. The next prime is 82600159. The reversal of 82600140 is 4100628.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80551 + ... + 81569.

It is an arithmetic number, because the mean of its divisors is an integer number (2770320).

Almost surely, 2^82600140 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 82600140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132975360).

82600140 is an abundant number, since it is smaller than the sum of its proper divisors (183350580).

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

82600140 is a wasteful number, since it uses less digits than its factorization.

82600140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 82600140 is about 9088.4619160780. The cubic root of 82600140 is about 435.5054502480.

Adding to 82600140 its reverse (4100628), we get a palindrome (86700768).

The spelling of 82600140 in words is "eighty-two million, six hundred thousand, one hundred forty".