78146808 has 32 divisors (see below), whose sum is σ = 197199360. Its totient is φ = 25804640.

The previous prime is 78146797. The next prime is 78146813. The reversal of 78146808 is 80864187.

It is a super-2 number, since 2×78146808² = 12213847201177728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78146808.

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 in 7 ways as a sum of consecutive naturals, for example, 12648 + ... + 17783.

It is an arithmetic number, because the mean of its divisors is an integer number (6162480).

Almost surely, 2^78146808 is an apocalyptic number.

It is an amenable number.

78146808 is an abundant number, since it is smaller than the sum of its proper divisors (119052552).

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

78146808 is a wasteful number, since it uses less digits than its factorization.

78146808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30547 (or 30543 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 78146808 is about 8840.0683255278. The cubic root of 78146808 is about 427.5337602011.

The spelling of 78146808 in words is "seventy-eight million, one hundred forty-six thousand, eight hundred eight".