204131616 has 48 divisors (see below), whose sum is σ = 577067904. Its totient is φ = 62809344.

The previous prime is 204131581. The next prime is 204131623. The reversal of 204131616 is 616131402.

It is a tau number, because it is divible by the number of its divisors (48).

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

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, 80536 + ... + 83031.

It is an arithmetic number, because the mean of its divisors is an integer number (12022248).

Almost surely, 2^204131616 is an apocalyptic number.

204131616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

204131616 is an abundant number, since it is smaller than the sum of its proper divisors (372936288).

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

204131616 is a wasteful number, since it uses less digits than its factorization.

204131616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163593 (or 163585 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 204131616 is about 14287.4635957541. The cubic root of 204131616 is about 588.8031045540.

The spelling of 204131616 in words is "two hundred four million, one hundred thirty-one thousand, six hundred sixteen".