820004708 has 12 divisors (see below), whose sum is σ = 1435549500. Its totient is φ = 409847712.

The previous prime is 820004687. The next prime is 820004747. The reversal of 820004708 is 807400028.

It can be written as a sum of positive squares in 2 ways, for example, as 320839744 + 499164964 = 17912^2 + 22342^2 .

It is a super-2 number, since 2×820004708² = 1344815442284330528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26291 + ... + 48282.

It is an arithmetic number, because the mean of its divisors is an integer number (119629125).

Almost surely, 2^820004708 is an apocalyptic number.

It is an amenable number.

820004708 is a deficient number, since it is larger than the sum of its proper divisors (615544792).

820004708 is a wasteful number, since it uses less digits than its factorization.

820004708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77326 (or 77324 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 820004708 is about 28635.7243316805. The cubic root of 820004708 is about 935.9919536284.

The spelling of 820004708 in words is "eight hundred twenty million, four thousand, seven hundred eight".