778472742 has 16 divisors (see below), whose sum is σ = 1557227520. Its totient is φ = 259443912.

The previous prime is 778472689. The next prime is 778472759. The reversal of 778472742 is 247274877.

778472742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 778472691 and 778472700.

It is a congruent number.

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, 45859 + ... + 60497.

It is an arithmetic number, because the mean of its divisors is an integer number (97326720).

Almost surely, 2^778472742 is an apocalyptic number.

778472742 is an abundant number, since it is smaller than the sum of its proper divisors (778754778).

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

778472742 is a wasteful number, since it uses less digits than its factorization.

778472742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23507.

The product of its digits is 1229312, while the sum is 48.

The square root of 778472742 is about 27901.1243859455. The cubic root of 778472742 is about 919.9152182427.

The spelling of 778472742 in words is "seven hundred seventy-eight million, four hundred seventy-two thousand, seven hundred forty-two".