204155616 has 48 divisors (see below), whose sum is σ = 612468864. Its totient is φ = 58329984.

The previous prime is 204155599. The next prime is 204155641. The reversal of 204155616 is 616551402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151230 + ... + 152573.

It is an arithmetic number, because the mean of its divisors is an integer number (12759768).

Almost surely, 2^204155616 is an apocalyptic number.

It is an amenable number.

204155616 is an abundant number, since it is smaller than the sum of its proper divisors (408313248).

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

204155616 is a wasteful number, since it uses less digits than its factorization.

204155616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303823 (or 303815 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 204155616 is about 14288.3034682218. The cubic root of 204155616 is about 588.8261790798.

The spelling of 204155616 in words is "two hundred four million, one hundred fifty-five thousand, six hundred sixteen".