78088130 has 16 divisors (see below), whose sum is σ = 144358200. Its totient is φ = 30390912.

The previous prime is 78088091. The next prime is 78088141. The reversal of 78088130 is 3188087.

It can be written as a sum of positive squares in 4 ways, for example, as 61105489 + 16982641 = 7817^2 + 4121^2 .

It is a Curzon 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, 105155 + ... + 105894.

Almost surely, 2^78088130 is an apocalyptic number.

78088130 is a deficient number, since it is larger than the sum of its proper divisors (66270070).

78088130 is a wasteful number, since it uses less digits than its factorization.

78088130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211093.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 78088130 is about 8836.7488365348. The cubic root of 78088130 is about 427.4267261531.

The spelling of 78088130 in words is "seventy-eight million, eighty-eight thousand, one hundred thirty".