78130004 has 12 divisors (see below), whose sum is σ = 137726484. Its totient is φ = 38779584.

The previous prime is 78129971. The next prime is 78130021. The reversal of 78130004 is 40003187.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34833604 + 43296400 = 5902^2 + 6580^2 .

It is a super-2 number, since 2×78130004² = 12208595050080032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 70739 + ... + 71834.

It is an arithmetic number, because the mean of its divisors is an integer number (11477207).

Almost surely, 2^78130004 is an apocalyptic number.

It is an amenable number.

78130004 is a deficient number, since it is larger than the sum of its proper divisors (59596480).

78130004 is a wasteful number, since it uses less digits than its factorization.

78130004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142714 (or 142712 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 78130004 is about 8839.1178292859. The cubic root of 78130004 is about 427.5031136419.

The spelling of 78130004 in words is "seventy-eight million, one hundred thirty thousand, four".