204450013 has 16 divisors (see below), whose sum is σ = 225792000. Its totient is φ = 184258800.

The previous prime is 204449969. The next prime is 204450017. The reversal of 204450013 is 310054402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204450013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204450017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85788 + ... + 88138.

It is an arithmetic number, because the mean of its divisors is an integer number (14112000).

Almost surely, 2^204450013 is an apocalyptic number.

204450013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

204450013 is a deficient number, since it is larger than the sum of its proper divisors (21341987).

204450013 is a wasteful number, since it uses less digits than its factorization.

204450013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 204450013 is about 14298.6017847900. The cubic root of 204450013 is about 589.1090766826.

The spelling of 204450013 in words is "two hundred four million, four hundred fifty thousand, thirteen".