78781468 has 12 divisors (see below), whose sum is σ = 145977552. Its totient is φ = 37073600.

The previous prime is 78781457. The next prime is 78781471. The reversal of 78781468 is 86418787.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 579208 + ... + 579343.

It is an arithmetic number, because the mean of its divisors is an integer number (12164796).

Almost surely, 2^78781468 is an apocalyptic number.

It is an amenable number.

78781468 is a deficient number, since it is larger than the sum of its proper divisors (67196084).

78781468 is a wasteful number, since it uses less digits than its factorization.

78781468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158572 (or 1158570 counting only the distinct ones).

The product of its digits is 602112, while the sum is 49.

The square root of 78781468 is about 8875.8925185020. The cubic root of 78781468 is about 428.6880292473.

The spelling of 78781468 in words is "seventy-eight million, seven hundred eighty-one thousand, four hundred sixty-eight".