78019768 has 16 divisors (see below), whose sum is σ = 148140000. Its totient is φ = 38515776.

The previous prime is 78019729. The next prime is 78019769. The reversal of 78019768 is 86791087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78019769) 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, 61093 + ... + 62356.

It is an arithmetic number, because the mean of its divisors is an integer number (9258750).

Almost surely, 2^78019768 is an apocalyptic number.

It is an amenable number.

78019768 is a deficient number, since it is larger than the sum of its proper divisors (70120232).

78019768 is a wasteful number, since it uses less digits than its factorization.

78019768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123534 (or 123530 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 78019768 is about 8832.8799380497. The cubic root of 78019768 is about 427.3019599572.

It can be divided in two parts, 78019 and 768, that added together give a palindrome (78787).

The spelling of 78019768 in words is "seventy-eight million, nineteen thousand, seven hundred sixty-eight".