78814476 has 72 divisors (see below), whose sum is σ = 217242480. Its totient is φ = 23946624.

The previous prime is 78814469. The next prime is 78814507. The reversal of 78814476 is 67441887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37830 + ... + 39858.

Almost surely, 2^78814476 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 78814476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108621240).

78814476 is an abundant number, since it is smaller than the sum of its proper divisors (138428004).

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

78814476 is a wasteful number, since it uses less digits than its factorization.

78814476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135 (or 2130 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 78814476 is about 8877.7517424177. The cubic root of 78814476 is about 428.7478917128.

The spelling of 78814476 in words is "seventy-eight million, eight hundred fourteen thousand, four hundred seventy-six".