78885884 has 48 divisors (see below), whose sum is σ = 175660800. Its totient is φ = 30728880.

The previous prime is 78885869. The next prime is 78885907. The reversal of 78885884 is 48858887.

It is a super-2 number, since 2×78885884² = 12445965388922912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12479 + ... + 17705.

It is an arithmetic number, because the mean of its divisors is an integer number (3659600).

Almost surely, 2^78885884 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 78885884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87830400).

78885884 is an abundant number, since it is smaller than the sum of its proper divisors (96774916).

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

78885884 is a wasteful number, since it uses less digits than its factorization.

78885884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263 (or 5247 counting only the distinct ones).

The product of its digits is 4587520, while the sum is 56.

The square root of 78885884 is about 8881.7725708329. The cubic root of 78885884 is about 428.8773382702.

The spelling of 78885884 in words is "seventy-eight million, eight hundred eighty-five thousand, eight hundred eighty-four".