78536824 has 8 divisors (see below), whose sum is σ = 147256560. Its totient is φ = 39268408.

The previous prime is 78536819. The next prime is 78536827. The reversal of 78536824 is 42863587.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78536827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4908544 + ... + 4908559.

It is an arithmetic number, because the mean of its divisors is an integer number (18407070).

Almost surely, 2^78536824 is an apocalyptic number.

It is an amenable number.

78536824 is a deficient number, since it is larger than the sum of its proper divisors (68719736).

78536824 is a wasteful number, since it uses less digits than its factorization.

78536824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9817109 (or 9817105 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 78536824 is about 8862.1004282281. The cubic root of 78536824 is about 428.2438270620.

The spelling of 78536824 in words is "seventy-eight million, five hundred thirty-six thousand, eight hundred twenty-four".