778130 has 8 divisors (see below), whose sum is σ = 1400652. Its totient is φ = 311248.

The previous prime is 778123. The next prime is 778153. The reversal of 778130 is 31877.

It can be written as a sum of positive squares in 2 ways, for example, as 734449 + 43681 = 857^2 + 209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 778130.

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 3 ways as a sum of consecutive naturals, for example, 38897 + ... + 38916.

2⁷⁷⁸¹³⁰ is an apocalyptic number.

778130 is a deficient number, since it is larger than the sum of its proper divisors (622522).

778130 is a wasteful number, since it uses less digits than its factorization.

778130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77820.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 778130 is about 882.1167723153. The cubic root of 778130 is about 91.9780193235.

The spelling of 778130 in words is "seven hundred seventy-eight thousand, one hundred thirty".