205398950 has 12 divisors (see below), whose sum is σ = 382042140. Its totient is φ = 82159560.

The previous prime is 205398943. The next prime is 205398959. The reversal of 205398950 is 59893502.

205398950 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×205398950² = 84377457322205000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205398898 and 205398907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205398959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2053940 + ... + 2054039.

It is an arithmetic number, because the mean of its divisors is an integer number (31836845).

Almost surely, 2^205398950 is an apocalyptic number.

205398950 is a deficient number, since it is larger than the sum of its proper divisors (176643190).

205398950 is a wasteful number, since it uses less digits than its factorization.

205398950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107991 (or 4107986 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 205398950 is about 14331.7462299610. The cubic root of 205398950 is about 590.0191030873.

The spelling of 205398950 in words is "two hundred five million, three hundred ninety-eight thousand, nine hundred fifty".