78665048 has 32 divisors (see below), whose sum is σ = 183893760. Its totient is φ = 30648480.

The previous prime is 78665047. The next prime is 78665077. The reversal of 78665048 is 84056687.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78665047) 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 7 ways as a sum of consecutive naturals, for example, 63236 + ... + 64467.

It is an arithmetic number, because the mean of its divisors is an integer number (5746680).

Almost surely, 2^78665048 is an apocalyptic number.

It is an amenable number.

78665048 is an abundant number, since it is smaller than the sum of its proper divisors (105228712).

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

78665048 is a wasteful number, since it uses less digits than its factorization.

78665048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127727 (or 127723 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 78665048 is about 8869.3318801362. The cubic root of 78665048 is about 428.4767593224.

The spelling of 78665048 in words is "seventy-eight million, six hundred sixty-five thousand, forty-eight".