204417081 has 32 divisors (see below), whose sum is σ = 331309440. Its totient is φ = 123537600.

The previous prime is 204417071. The next prime is 204417091. The reversal of 204417081 is 180714402.

It is an interprime number because it is at equal distance from previous prime (204417071) and next prime (204417091).

It is not a de Polignac number, because 204417081 - 2⁵ = 204417049 is a prime.

It is a super-2 number, since 2×204417081² = 83572686009121122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (204417071) 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 31 ways as a sum of consecutive naturals, for example, 136171 + ... + 137663.

It is an arithmetic number, because the mean of its divisors is an integer number (10353420).

Almost surely, 2^204417081 is an apocalyptic number.

It is an amenable number.

204417081 is a deficient number, since it is larger than the sum of its proper divisors (126892359).

204417081 is a wasteful number, since it uses less digits than its factorization.

204417081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974 (or 1968 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 204417081 is about 14297.4501572833. The cubic root of 204417081 is about 589.0774445303.

The spelling of 204417081 in words is "two hundred four million, four hundred seventeen thousand, eighty-one".