78943546 has 48 divisors (see below), whose sum is σ = 142490880. Its totient is φ = 32630400.

The previous prime is 78943523. The next prime is 78943591. The reversal of 78943546 is 64534987.

It is a junction number, because it is equal to n+sod(n) for n = 78943496 and 78943505.

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 23 ways as a sum of consecutive naturals, for example, 127225 + ... + 127843.

It is an arithmetic number, because the mean of its divisors is an integer number (2968560).

Almost surely, 2^78943546 is an apocalyptic number.

78943546 is a deficient number, since it is larger than the sum of its proper divisors (63547334).

78943546 is a wasteful number, since it uses less digits than its factorization.

78943546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 680 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 78943546 is about 8885.0180641347. The cubic root of 78943546 is about 428.9818094413.

The spelling of 78943546 in words is "seventy-eight million, nine hundred forty-three thousand, five hundred forty-six".