82799838 has 24 divisors (see below), whose sum is σ = 195709176. Its totient is φ = 25090800.

The previous prime is 82799831. The next prime is 82799861. The reversal of 82799838 is 83899728.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82799831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208893 + ... + 209288.

It is an arithmetic number, because the mean of its divisors is an integer number (8154549).

Almost surely, 2^82799838 is an apocalyptic number.

82799838 is an abundant number, since it is smaller than the sum of its proper divisors (112909338).

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

82799838 is a wasteful number, since it uses less digits than its factorization.

82799838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418200 (or 418197 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 82799838 is about 9099.4416312211. The cubic root of 82799838 is about 435.8561339722.

The spelling of 82799838 in words is "eighty-two million, seven hundred ninety-nine thousand, eight hundred thirty-eight".