78575448 has 128 divisors (see below), whose sum is σ = 234432000. Its totient is φ = 21482496.

The previous prime is 78575363. The next prime is 78575459. The reversal of 78575448 is 84457587.

It is a junction number, because it is equal to n+sod(n) for n = 78575397 and 78575406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 527278 + ... + 527426.

It is an arithmetic number, because the mean of its divisors is an integer number (1831500).

Almost surely, 2^78575448 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 78575448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117216000).

78575448 is an abundant number, since it is smaller than the sum of its proper divisors (155856552).

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

78575448 is a wasteful number, since it uses less digits than its factorization.

78575448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 277 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 48.

The square root of 78575448 is about 8864.2793277288. The cubic root of 78575448 is about 428.3140182495.

The spelling of 78575448 in words is "seventy-eight million, five hundred seventy-five thousand, four hundred forty-eight".