206323420 has 48 divisors (see below), whose sum is σ = 447003648. Its totient is φ = 79951680.

The previous prime is 206323387. The next prime is 206323457. The reversal of 206323420 is 24323602.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 206323391 and 206323400.

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, 95755 + ... + 97885.

It is an arithmetic number, because the mean of its divisors is an integer number (9312576).

Almost surely, 2^206323420 is an apocalyptic number.

206323420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206323420 is an abundant number, since it is smaller than the sum of its proper divisors (240680228).

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

206323420 is a wasteful number, since it uses less digits than its factorization.

206323420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290 (or 2288 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 206323420 is about 14363.9625452032. The cubic root of 206323420 is about 590.9029743100.

The spelling of 206323420 in words is "two hundred six million, three hundred twenty-three thousand, four hundred twenty".