78800105 has 32 divisors (see below), whose sum is σ = 101779200. Its totient is φ = 58464000.

The previous prime is 78800089. The next prime is 78800147. The reversal of 78800105 is 50100887.

It is a happy number.

It is not a de Polignac number, because 78800105 - 2⁴ = 78800089 is a prime.

It is a super-2 number, since 2×78800105² = 12418913096022050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

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 31 ways as a sum of consecutive naturals, for example, 521780 + ... + 521930.

It is an arithmetic number, because the mean of its divisors is an integer number (3180600).

Almost surely, 2^78800105 is an apocalyptic number.

It is an amenable number.

78800105 is a deficient number, since it is larger than the sum of its proper divisors (22979095).

78800105 is a wasteful number, since it uses less digits than its factorization.

78800105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 78800105 is about 8876.9423226694. The cubic root of 78800105 is about 428.7218308891.

The spelling of 78800105 in words is "seventy-eight million, eight hundred thousand, one hundred five".