802778346 has 12 divisors (see below), whose sum is σ = 1739353122. Its totient is φ = 267592776.

The previous prime is 802778311. The next prime is 802778357. The reversal of 802778346 is 643877208.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 801512721 + 1265625 = 28311^2 + 1125^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22299381 + ... + 22299416.

Almost surely, 2^802778346 is an apocalyptic number.

802778346 is an abundant number, since it is smaller than the sum of its proper divisors (936574776).

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

802778346 is a wasteful number, since it uses less digits than its factorization.

802778346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44598805 (or 44598802 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 802778346 is about 28333.3433607825. The cubic root of 802778346 is about 929.3911866890.

The spelling of 802778346 in words is "eight hundred two million, seven hundred seventy-eight thousand, three hundred forty-six".