78863384 has 16 divisors (see below), whose sum is σ = 148300200. Its totient is φ = 39316672.

The previous prime is 78863381. The next prime is 78863399. The reversal of 78863384 is 48336887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78863381) 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, 11429 + ... + 16980.

Almost surely, 2^78863384 is an apocalyptic number.

It is an amenable number.

78863384 is a deficient number, since it is larger than the sum of its proper divisors (69436816).

78863384 is a wasteful number, since it uses less digits than its factorization.

78863384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28762 (or 28758 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 78863384 is about 8880.5058414484. The cubic root of 78863384 is about 428.8365592901.

The spelling of 78863384 in words is "seventy-eight million, eight hundred sixty-three thousand, three hundred eighty-four".