206932820 has 12 divisors (see below), whose sum is σ = 434558964. Its totient is φ = 82773120.

The previous prime is 206932811. The next prime is 206932841. The reversal of 206932820 is 28239602.

It can be written as a sum of positive squares in 2 ways, for example, as 41964484 + 164968336 = 6478^2 + 12844^2 .

It is a super-3 number, since 3×206932820³ (a number of 26 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5173301 + ... + 5173340.

It is an arithmetic number, because the mean of its divisors is an integer number (36213247).

Almost surely, 2^206932820 is an apocalyptic number.

206932820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206932820 is an abundant number, since it is smaller than the sum of its proper divisors (227626144).

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

206932820 is a wasteful number, since it uses less digits than its factorization.

206932820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10346650 (or 10346648 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 206932820 is about 14385.1597140942. The cubic root of 206932820 is about 591.4841691553.

The spelling of 206932820 in words is "two hundred six million, nine hundred thirty-two thousand, eight hundred twenty".