204167987 has 8 divisors (see below), whose sum is σ = 218242080. Its totient is φ = 190527040.

The previous prime is 204167983. The next prime is 204167993. The reversal of 204167987 is 789761402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204167987 - 2² = 204167983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204167983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107312 + ... + 109197.

It is an arithmetic number, because the mean of its divisors is an integer number (27280260).

Almost surely, 2^204167987 is an apocalyptic number.

204167987 is a deficient number, since it is larger than the sum of its proper divisors (14074093).

204167987 is a wasteful number, since it uses less digits than its factorization.

204167987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216573.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 204167987 is about 14288.7363682028. The cubic root of 204167987 is about 588.8380723301.

The spelling of 204167987 in words is "two hundred four million, one hundred sixty-seven thousand, nine hundred eighty-seven".