78840600 has 96 divisors (see below), whose sum is σ = 247015440. Its totient is φ = 20800000.

The previous prime is 78840583. The next prime is 78840613. The reversal of 78840600 is 604887.

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, 59950 + ... + 61250.

Almost surely, 2^78840600 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 78840600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123507720).

78840600 is an abundant number, since it is smaller than the sum of its proper divisors (168174840).

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

78840600 is a wasteful number, since it uses less digits than its factorization.

78840600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 78840600 is about 8879.2229389739. Note that the first 3 decimals coincide. The cubic root of 78840600 is about 428.7952576841.

The spelling of 78840600 in words is "seventy-eight million, eight hundred forty thousand, six hundred".