204223700 has 18 divisors (see below), whose sum is σ = 443165646. Its totient is φ = 81689440.

The previous prime is 204223699. The next prime is 204223709. The reversal of 204223700 is 7322402.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 71605444 + 132618256 = 8462^2 + 11516^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204223709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1021019 + ... + 1021218.

Almost surely, 2^204223700 is an apocalyptic number.

204223700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204223700 is an abundant number, since it is smaller than the sum of its proper divisors (238941946).

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

204223700 is a wasteful number, since it uses less digits than its factorization.

204223700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042251 (or 2042244 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 204223700 is about 14290.6857778065. The cubic root of 204223700 is about 588.8916278237.

The spelling of 204223700 in words is "two hundred four million, two hundred twenty-three thousand, seven hundred".