204163340 has 48 divisors (see below), whose sum is σ = 442096704. Its totient is φ = 79161600.

The previous prime is 204163331. The next prime is 204163343. The reversal of 204163340 is 43361402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (204163343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85442 + ... + 87798.

It is an arithmetic number, because the mean of its divisors is an integer number (9210348).

Almost surely, 2^204163340 is an apocalyptic number.

204163340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204163340 is an abundant number, since it is smaller than the sum of its proper divisors (237933364).

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

204163340 is a wasteful number, since it uses less digits than its factorization.

204163340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 204163340 is about 14288.5737566770. The cubic root of 204163340 is about 588.8336048467.

The spelling of 204163340 in words is "two hundred four million, one hundred sixty-three thousand, three hundred forty".