78859040 has 96 divisors (see below), whose sum is σ = 207277056. Its totient is φ = 28154880.

The previous prime is 78859007. The next prime is 78859043. The reversal of 78859040 is 4095887.

It is not an unprimeable number, because it can be changed into a prime (78859043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63869 + ... + 65091.

It is an arithmetic number, because the mean of its divisors is an integer number (2159136).

Almost surely, 2^78859040 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 78859040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103638528).

78859040 is an abundant number, since it is smaller than the sum of its proper divisors (128418016).

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

78859040 is a wasteful number, since it uses less digits than its factorization.

78859040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 78859040 is about 8880.2612574180. The cubic root of 78859040 is about 428.8286853350.

The spelling of 78859040 in words is "seventy-eight million, eight hundred fifty-nine thousand, forty".