205998148 has 6 divisors (see below), whose sum is σ = 360496766. Its totient is φ = 102999072.

The previous prime is 205998137. The next prime is 205998173. The reversal of 205998148 is 841899502.

It can be written as a sum of positive squares in only one way, i.e., 205578244 + 419904 = 14338^2 + 648^2 .

It is a junction number, because it is equal to n+sod(n) for n = 205998098 and 205998107.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25749765 + ... + 25749772.

Almost surely, 2^205998148 is an apocalyptic number.

It is an amenable number.

205998148 is a deficient number, since it is larger than the sum of its proper divisors (154498618).

205998148 is a wasteful number, since it uses less digits than its factorization.

205998148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51499541 (or 51499539 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 205998148 is about 14352.6355767852. The cubic root of 205998148 is about 590.5922884863.

The spelling of 205998148 in words is "two hundred five million, nine hundred ninety-eight thousand, one hundred forty-eight".