82169378 has 8 divisors (see below), whose sum is σ = 126585372. Its totient is φ = 39974256.

The previous prime is 82169369. The next prime is 82169387. The reversal of 82169378 is 87396128.

It is an interprime number because it is at equal distance from previous prime (82169369) and next prime (82169387).

It can be written as a sum of positive squares in 2 ways, for example, as 78623689 + 3545689 = 8867^2 + 1883^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 555125 + ... + 555272.

Almost surely, 2^82169378 is an apocalyptic number.

82169378 is a deficient number, since it is larger than the sum of its proper divisors (44415994).

82169378 is a wasteful number, since it uses less digits than its factorization.

82169378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110436.

The product of its digits is 145152, while the sum is 44.

The square root of 82169378 is about 9064.7326491188. The cubic root of 82169378 is about 434.7470727661.

The spelling of 82169378 in words is "eighty-two million, one hundred sixty-nine thousand, three hundred seventy-eight".