821473334 has 32 divisors (see below), whose sum is σ = 1389056256. Its totient is φ = 361069920.

The previous prime is 821473291. The next prime is 821473361. The reversal of 821473334 is 433374128.

821473334 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 = 821473294 and 821473303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132917 + ... + 138959.

It is an arithmetic number, because the mean of its divisors is an integer number (43408008).

Almost surely, 2^821473334 is an apocalyptic number.

821473334 is a deficient number, since it is larger than the sum of its proper divisors (567582922).

821473334 is a wasteful number, since it uses less digits than its factorization.

821473334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6260.

The product of its digits is 48384, while the sum is 35.

The square root of 821473334 is about 28661.3561088794. The cubic root of 821473334 is about 936.5504066361.

The spelling of 821473334 in words is "eight hundred twenty-one million, four hundred seventy-three thousand, three hundred thirty-four".