78442182 has 160 divisors (see below), whose sum is σ = 229787712. Its totient is φ = 19408896.

The previous prime is 78442171. The next prime is 78442207. The reversal of 78442182 is 28124487.

It is a super-2 number, since 2×78442182² = 12306351833842248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 250458 + ... + 250770.

Almost surely, 2^78442182 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78442182, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114893856).

78442182 is an abundant number, since it is smaller than the sum of its proper divisors (151345530).

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

78442182 is a wasteful number, since it uses less digits than its factorization.

78442182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 355 counting only the distinct ones).

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

The square root of 78442182 is about 8856.7591138068. The cubic root of 78442182 is about 428.0717373276.

The spelling of 78442182 in words is "seventy-eight million, four hundred forty-two thousand, one hundred eighty-two".