820204876 has 12 divisors (see below), whose sum is σ = 1468739272. Its totient is φ = 400565088.

The previous prime is 820204871. The next prime is 820204951. The reversal of 820204876 is 678402028.

It is a super-2 number, since 2×820204876² = 1345472077228350752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (820204871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2384145 + ... + 2384488.

Almost surely, 2^820204876 is an apocalyptic number.

820204876 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

820204876 is a deficient number, since it is larger than the sum of its proper divisors (648534396).

820204876 is a wasteful number, since it uses less digits than its factorization.

820204876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4768680 (or 4768678 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 820204876 is about 28639.2191932671. The cubic root of 820204876 is about 936.0681078231.

The spelling of 820204876 in words is "eight hundred twenty million, two hundred four thousand, eight hundred seventy-six".