82219378 has 16 divisors (see below), whose sum is σ = 134797824. Its totient is φ = 37442880.

The previous prime is 82219373. The next prime is 82219421. The reversal of 82219378 is 87391228.

It is a super-2 number, since 2×82219378² = 13520052237413768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82219378.

It is not an unprimeable number, because it can be changed into a prime (82219373) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 37950 + ... + 40057.

It is an arithmetic number, because the mean of its divisors is an integer number (8424864).

Almost surely, 2^82219378 is an apocalyptic number.

82219378 is a deficient number, since it is larger than the sum of its proper divisors (52578446).

82219378 is a wasteful number, since it uses less digits than its factorization.

82219378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78057.

The product of its digits is 48384, while the sum is 40.

The square root of 82219378 is about 9067.4901709348. The cubic root of 82219378 is about 434.8352359667.

The spelling of 82219378 in words is "eighty-two million, two hundred nineteen thousand, three hundred seventy-eight".