78981448 has 128 divisors (see below), whose sum is σ = 195955200. Its totient is φ = 28993536.

The previous prime is 78981443. The next prime is 78981467. The reversal of 78981448 is 84418987.

It is not an unprimeable number, because it can be changed into a prime (78981443) 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 31 ways as a sum of consecutive naturals, for example, 887388 + ... + 887476.

It is an arithmetic number, because the mean of its divisors is an integer number (1530900).

Almost surely, 2^78981448 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 78981448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97977600).

78981448 is an abundant number, since it is smaller than the sum of its proper divisors (116973752).

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

78981448 is a wasteful number, since it uses less digits than its factorization.

78981448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 187 counting only the distinct ones).

The product of its digits is 516096, while the sum is 49.

The square root of 78981448 is about 8887.1507245011. The cubic root of 78981448 is about 429.0504520260.

The spelling of 78981448 in words is "seventy-eight million, nine hundred eighty-one thousand, four hundred forty-eight".