205998150 has 24 divisors (see below), whose sum is σ = 510875784. Its totient is φ = 54932800.

The previous prime is 205998137. The next prime is 205998173. The reversal of 205998150 is 51899502.

It is a junction number, because it is equal to n+sod(n) for n = 205998099 and 205998108.

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 11 ways as a sum of consecutive naturals, for example, 686511 + ... + 686810.

It is an arithmetic number, because the mean of its divisors is an integer number (21286491).

Almost surely, 2^205998150 is an apocalyptic number.

205998150 is an abundant number, since it is smaller than the sum of its proper divisors (304877634).

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

205998150 is a wasteful number, since it uses less digits than its factorization.

205998150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373336 (or 1373331 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 205998150 is about 14352.6356464588. The cubic root of 205998150 is about 590.5922903976.

The spelling of 205998150 in words is "two hundred five million, nine hundred ninety-eight thousand, one hundred fifty".