204402430 has 32 divisors (see below), whose sum is σ = 379236960. Its totient is φ = 79263360.

The previous prime is 204402379. The next prime is 204402431. The reversal of 204402430 is 34204402.

It is a junction number, because it is equal to n+sod(n) for n = 204402398 and 204402407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204402431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121636 + ... + 123304.

It is an arithmetic number, because the mean of its divisors is an integer number (11851155).

Almost surely, 2^204402430 is an apocalyptic number.

204402430 is a deficient number, since it is larger than the sum of its proper divisors (174834530).

204402430 is a wasteful number, since it uses less digits than its factorization.

204402430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 204402430 is about 14296.9377840151. The cubic root of 204402430 is about 589.0633707230.

Adding to 204402430 its reverse (34204402), we get a palindrome (238606832).

The spelling of 204402430 in words is "two hundred four million, four hundred two thousand, four hundred thirty".