204378801 has 24 divisors (see below), whose sum is σ = 315305760. Its totient is φ = 117342720.

The previous prime is 204378793. The next prime is 204378817. The reversal of 204378801 is 108873402.

It is not a de Polignac number, because 204378801 - 2³ = 204378793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204378901) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7920 + ... + 21713.

It is an arithmetic number, because the mean of its divisors is an integer number (13137740).

Almost surely, 2^204378801 is an apocalyptic number.

It is an amenable number.

204378801 is a deficient number, since it is larger than the sum of its proper divisors (110926959).

204378801 is a wasteful number, since it uses less digits than its factorization.

204378801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29677 (or 29666 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 204378801 is about 14296.1113943618. Note that the first 3 decimals coincide. The cubic root of 204378801 is about 589.0406711971.

The spelling of 204378801 in words is "two hundred four million, three hundred seventy-eight thousand, eight hundred one".