78629768 has 32 divisors (see below), whose sum is σ = 168816960. Its totient is φ = 33633600.

The previous prime is 78629767. The next prime is 78629791. The reversal of 78629768 is 86792687.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (78629767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38255 + ... + 40257.

It is an arithmetic number, because the mean of its divisors is an integer number (5275530).

Almost surely, 2^78629768 is an apocalyptic number.

It is an amenable number.

78629768 is an abundant number, since it is smaller than the sum of its proper divisors (90187192).

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

78629768 is a wasteful number, since it uses less digits than its factorization.

78629768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717 (or 2713 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 53.

The square root of 78629768 is about 8867.3427812395. The cubic root of 78629768 is about 428.4126947818.

It can be divided in two parts, 78629 and 768, that added together give a palindrome (79397).

The spelling of 78629768 in words is "seventy-eight million, six hundred twenty-nine thousand, seven hundred sixty-eight".