204854871 has 16 divisors (see below), whose sum is σ = 295900640. Its totient is φ = 126060480.

The previous prime is 204854861. The next prime is 204854891. The reversal of 204854871 is 178458402.

It is a happy number.

It is not a de Polignac number, because 204854871 - 2⁶ = 204854807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204854801) 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, 8950 + ... + 22131.

It is an arithmetic number, because the mean of its divisors is an integer number (18493790).

Almost surely, 2^204854871 is an apocalyptic number.

204854871 is a deficient number, since it is larger than the sum of its proper divisors (91045769).

204854871 is an equidigital number, since it uses as much as digits as its factorization.

204854871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31123 (or 31097 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 204854871 is about 14312.7520414489. The cubic root of 204854871 is about 589.4976773975.

The spelling of 204854871 in words is "two hundred four million, eight hundred fifty-four thousand, eight hundred seventy-one".