82442178 has 128 divisors (see below), whose sum is σ = 237619200. Its totient is φ = 20575296.

The previous prime is 82442149. The next prime is 82442233. The reversal of 82442178 is 87124428.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 92925 + ... + 93807.

It is an arithmetic number, because the mean of its divisors is an integer number (1856400).

Almost surely, 2^82442178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82442178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118809600).

82442178 is an abundant number, since it is smaller than the sum of its proper divisors (155177022).

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

82442178 is a wasteful number, since it uses less digits than its factorization.

82442178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 927 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 82442178 is about 9079.7675080368. The cubic root of 82442178 is about 435.2276572913.

The spelling of 82442178 in words is "eighty-two million, four hundred forty-two thousand, one hundred seventy-eight".