78064130 has 16 divisors (see below), whose sum is σ = 140694840. Its totient is φ = 31185792.

The previous prime is 78064121. The next prime is 78064163. The reversal of 78064130 is 3146087.

It can be written as a sum of positive squares in 4 ways, for example, as 64529089 + 13535041 = 8033^2 + 3679^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78064093 and 78064102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4016 + ... + 13124.

Almost surely, 2^78064130 is an apocalyptic number.

78064130 is a deficient number, since it is larger than the sum of its proper divisors (62630710).

78064130 is a wasteful number, since it uses less digits than its factorization.

78064130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 78064130 is about 8835.3907666837. The cubic root of 78064130 is about 427.3829325038.

The spelling of 78064130 in words is "seventy-eight million, sixty-four thousand, one hundred thirty".