78543136 has 96 divisors (see below), whose sum is σ = 186157440. Its totient is φ = 31911936.

The previous prime is 78543083. The next prime is 78543139. The reversal of 78543136 is 63134587.

It is a junction number, because it is equal to n+sod(n) for n = 78543095 and 78543104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78543139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695016 + ... + 695128.

It is an arithmetic number, because the mean of its divisors is an integer number (1939140).

Almost surely, 2^78543136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78543136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93078720).

78543136 is an abundant number, since it is smaller than the sum of its proper divisors (107614304).

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

78543136 is a wasteful number, since it uses less digits than its factorization.

78543136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 258 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 78543136 is about 8862.4565443222. The cubic root of 78543136 is about 428.2552993986.

The spelling of 78543136 in words is "seventy-eight million, five hundred forty-three thousand, one hundred thirty-six".