78781208 has 16 divisors (see below), whose sum is σ = 161143560. Its totient is φ = 35809600.

The previous prime is 78781207. The next prime is 78781231. The reversal of 78781208 is 80218787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78781207) 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 3 ways as a sum of consecutive naturals, for example, 447533 + ... + 447708.

Almost surely, 2^78781208 is an apocalyptic number.

It is an amenable number.

78781208 is an abundant number, since it is smaller than the sum of its proper divisors (82362352).

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

78781208 is a wasteful number, since it uses less digits than its factorization.

78781208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895258 (or 895254 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 41.

The square root of 78781208 is about 8875.8778720755. The cubic root of 78781208 is about 428.6875576516.

The spelling of 78781208 in words is "seventy-eight million, seven hundred eighty-one thousand, two hundred eight".