78825834 has 24 divisors (see below), whose sum is σ = 171448992. Its totient is φ = 26173800.

The previous prime is 78825823. The next prime is 78825863. The reversal of 78825834 is 43852887.

It is a self number, because there is not a number n which added to its sum of digits gives 78825834.

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 11 ways as a sum of consecutive naturals, for example, 3592 + ... + 13059.

It is an arithmetic number, because the mean of its divisors is an integer number (7143708).

Almost surely, 2^78825834 is an apocalyptic number.

78825834 is an abundant number, since it is smaller than the sum of its proper divisors (92623158).

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

78825834 is a wasteful number, since it uses less digits than its factorization.

78825834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16922 (or 16919 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 78825834 is about 8878.3914083577. The cubic root of 78825834 is about 428.7684864262.

The spelling of 78825834 in words is "seventy-eight million, eight hundred twenty-five thousand, eight hundred thirty-four".