78963240 has 128 divisors (see below), whose sum is σ = 254016000. Its totient is φ = 19577088.

The previous prime is 78963239. The next prime is 78963271. The reversal of 78963240 is 4236987.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 134227 + ... + 134813.

It is an arithmetic number, because the mean of its divisors is an integer number (1984500).

Almost surely, 2^78963240 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 78963240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127008000).

78963240 is an abundant number, since it is smaller than the sum of its proper divisors (175052760).

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

78963240 is a wasteful number, since it uses less digits than its factorization.

78963240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 78963240 is about 8886.1262651394. The cubic root of 78963240 is about 429.0174790885.

The spelling of 78963240 in words is "seventy-eight million, nine hundred sixty-three thousand, two hundred forty".