78681248 has 24 divisors (see below), whose sum is σ = 155131200. Its totient is φ = 39282880.

The previous prime is 78681247. The next prime is 78681257. The reversal of 78681248 is 84218687.

It is a junction number, because it is equal to n+sod(n) for n = 78681199 and 78681208.

It is not an unprimeable number, because it can be changed into a prime (78681247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27803 + ... + 30501.

It is an arithmetic number, because the mean of its divisors is an integer number (6463800).

Almost surely, 2^78681248 is an apocalyptic number.

It is an amenable number.

78681248 is a deficient number, since it is larger than the sum of its proper divisors (76449952).

78681248 is a wasteful number, since it uses less digits than its factorization.

78681248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620 (or 3612 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 78681248 is about 8870.2450924425. The cubic root of 78681248 is about 428.5061702965.

The spelling of 78681248 in words is "seventy-eight million, six hundred eighty-one thousand, two hundred forty-eight".