78563394 has 48 divisors (see below), whose sum is σ = 209506752. Its totient is φ = 20719584.

The previous prime is 78563389. The next prime is 78563399. The reversal of 78563394 is 49336587.

78563394 is a `hidden beast` number, since 7 + 8 + 5 + 633 + 9 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (78563389) and next prime (78563399).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (78563399) 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 23 ways as a sum of consecutive naturals, for example, 22344 + ... + 25619.

It is an arithmetic number, because the mean of its divisors is an integer number (4364724).

Almost surely, 2^78563394 is an apocalyptic number.

78563394 is an abundant number, since it is smaller than the sum of its proper divisors (130943358).

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

78563394 is a wasteful number, since it uses less digits than its factorization.

78563394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47991 (or 47988 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 78563394 is about 8863.5993817410. The cubic root of 78563394 is about 428.2921150497.

The spelling of 78563394 in words is "seventy-eight million, five hundred sixty-three thousand, three hundred ninety-four".