78751448 has 16 divisors (see below), whose sum is σ = 154079280. Its totient is φ = 37663648.

The previous prime is 78751433. The next prime is 78751459. The reversal of 78751448 is 84415787.

It is a junction number, because it is equal to n+sod(n) for n = 78751399 and 78751408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213815 + ... + 214182.

It is an arithmetic number, because the mean of its divisors is an integer number (9629955).

Almost surely, 2^78751448 is an apocalyptic number.

It is an amenable number.

78751448 is a deficient number, since it is larger than the sum of its proper divisors (75327832).

78751448 is a wasteful number, since it uses less digits than its factorization.

78751448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428026 (or 428022 counting only the distinct ones).

The product of its digits is 250880, while the sum is 44.

The square root of 78751448 is about 8874.2012598318. The cubic root of 78751448 is about 428.6335712217.

The spelling of 78751448 in words is "seventy-eight million, seven hundred fifty-one thousand, four hundred forty-eight".