204107136 has 64 divisors (see below), whose sum is σ = 545088000. Its totient is φ = 67668480.

The previous prime is 204107119. The next prime is 204107147. The reversal of 204107136 is 631701402.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×204107136² = 83319445932244992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 75081 + ... + 77751.

It is an arithmetic number, because the mean of its divisors is an integer number (8517000).

Almost surely, 2^204107136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204107136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272544000).

204107136 is an abundant number, since it is smaller than the sum of its proper divisors (340980864).

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

204107136 is a wasteful number, since it uses less digits than its factorization.

204107136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887 (or 2875 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 204107136 is about 14286.6068749721. The cubic root of 204107136 is about 588.7795666743.

Adding to 204107136 its reverse (631701402), we get a palindrome (835808538).

The spelling of 204107136 in words is "two hundred four million, one hundred seven thousand, one hundred thirty-six".