78582823 has 24 divisors (see below), whose sum is σ = 93382416. Its totient is φ = 65337600.

The previous prime is 78582811. The next prime is 78582851. The reversal of 78582823 is 32828587.

It is not a de Polignac number, because 78582823 - 2⁹ = 78582311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78582823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78582853) 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 23 ways as a sum of consecutive naturals, for example, 946740 + ... + 946822.

It is an arithmetic number, because the mean of its divisors is an integer number (3890934).

Almost surely, 2^78582823 is an apocalyptic number.

78582823 is a deficient number, since it is larger than the sum of its proper divisors (14799593).

78582823 is a wasteful number, since it uses less digits than its factorization.

78582823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 172 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 78582823 is about 8864.6953134329. The cubic root of 78582823 is about 428.3274181819.

The spelling of 78582823 in words is "seventy-eight million, five hundred eighty-two thousand, eight hundred twenty-three".