78308568 has 48 divisors (see below), whose sum is σ = 228402720. Its totient is φ = 24094656.

The previous prime is 78308561. The next prime is 78308597. The reversal of 78308568 is 86580387.

78308568 is a `hidden beast` number, since 7 + 83 + 0 + 8 + 568 = 666.

It is a super-2 number, since 2×78308568² = 12264463644421248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78308561) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 40896 + ... + 42767.

It is an arithmetic number, because the mean of its divisors is an integer number (4758390).

Almost surely, 2^78308568 is an apocalyptic number.

78308568 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

78308568 is an abundant number, since it is smaller than the sum of its proper divisors (150094152).

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

78308568 is a wasteful number, since it uses less digits than its factorization.

78308568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83688 (or 83681 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 78308568 is about 8849.2128463497. The cubic root of 78308568 is about 427.8285480917.

The spelling of 78308568 in words is "seventy-eight million, three hundred eight thousand, five hundred sixty-eight".