78768188 has 6 divisors (see below), whose sum is σ = 137844336. Its totient is φ = 39384092.

The previous prime is 78768161. The next prime is 78768203. The reversal of 78768188 is 88186787.

It is a happy number.

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 as a sum of consecutive naturals, namely, 9846020 + ... + 9846027.

It is an arithmetic number, because the mean of its divisors is an integer number (22974056).

Almost surely, 2^78768188 is an apocalyptic number.

It is an amenable number.

78768188 is a deficient number, since it is larger than the sum of its proper divisors (59076148).

78768188 is a wasteful number, since it uses less digits than its factorization.

78768188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19692051 (or 19692049 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 53.

The square root of 78768188 is about 8875.1443931916. The cubic root of 78768188 is about 428.6639402617.

It can be divided in two parts, 7 and 8768188, that multiplied together give a palindrome (61377316).

The spelling of 78768188 in words is "seventy-eight million, seven hundred sixty-eight thousand, one hundred eighty-eight".