778468530 has 64 divisors (see below), whose sum is σ = 2192958720. Its totient is φ = 173124864.

The previous prime is 778468507. The next prime is 778468577. The reversal of 778468530 is 35864877.

It is a self number, because there is not a number n which added to its sum of digits gives 778468530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42325 + ... + 57864.

It is an arithmetic number, because the mean of its divisors is an integer number (34264980).

Almost surely, 2^778468530 is an apocalyptic number.

778468530 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

778468530 is an abundant number, since it is smaller than the sum of its proper divisors (1414490190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

778468530 is a wasteful number, since it uses less digits than its factorization.

778468530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100243.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 778468530 is about 27901.0489050143. The cubic root of 778468530 is about 919.9135591438.

The spelling of 778468530 in words is "seven hundred seventy-eight million, four hundred sixty-eight thousand, five hundred thirty".