78709896 has 48 divisors (see below), whose sum is σ = 215757360. Its totient is φ = 25918560.

The previous prime is 78709889. The next prime is 78709919. The reversal of 78709896 is 69890787.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 610 + ... + 12561.

It is an arithmetic number, because the mean of its divisors is an integer number (4494945).

Almost surely, 2^78709896 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 78709896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107878680).

78709896 is an abundant number, since it is smaller than the sum of its proper divisors (137047464).

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

78709896 is a wasteful number, since it uses less digits than its factorization.

78709896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13266 (or 13259 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The square root of 78709896 is about 8871.8597824808. The cubic root of 78709896 is about 428.5581706375.

It can be divided in two parts, 7870 and 9896, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 78709896 in words is "seventy-eight million, seven hundred nine thousand, eight hundred ninety-six".