78467816 has 48 divisors (see below), whose sum is σ = 174830400. Its totient is φ = 32905824.

The previous prime is 78467813. The next prime is 78467833. The reversal of 78467816 is 61876487.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (78467813) 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 11 ways as a sum of consecutive naturals, for example, 16295 + ... + 20553.

It is an arithmetic number, because the mean of its divisors is an integer number (3642300).

Almost surely, 2^78467816 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 78467816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87415200).

78467816 is an abundant number, since it is smaller than the sum of its proper divisors (96362584).

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

78467816 is a wasteful number, since it uses less digits than its factorization.

78467816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4326 (or 4315 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 78467816 is about 8858.2061389426. The cubic root of 78467816 is about 428.1183618840.

The spelling of 78467816 in words is "seventy-eight million, four hundred sixty-seven thousand, eight hundred sixteen".