206976819828 has 48 divisors (see below), whose sum is σ = 501581122560. Its totient is φ = 66379861344.

The previous prime is 206976819787. The next prime is 206976819911. The reversal of 206976819828 is 828918679602.

It is a super-2 number, since 2×206976819828² (a number of 23 digits) contains 22 as substring.

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, 3076726 + ... + 3143277.

It is an arithmetic number, because the mean of its divisors is an integer number (10449606720).

Almost surely, 2^206976819828 is an apocalyptic number.

It is an amenable number.

206976819828 is an abundant number, since it is smaller than the sum of its proper divisors (294604302732).

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

206976819828 is a wasteful number, since it uses less digits than its factorization.

206976819828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6220116 (or 6220114 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 66.

The spelling of 206976819828 in words is "two hundred six billion, nine hundred seventy-six million, eight hundred nineteen thousand, eight hundred twenty-eight".