205398027 has 24 divisors (see below), whose sum is σ = 313092000. Its totient is φ = 129495168.

The previous prime is 205398023. The next prime is 205398031. The reversal of 205398027 is 720893502.

It is a happy number.

205398027 is a `hidden beast` number, since 20 + 539 + 80 + 27 = 666.

It is an interprime number because it is at equal distance from previous prime (205398023) and next prime (205398031).

It is not a de Polignac number, because 205398027 - 2² = 205398023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205397982 and 205398000.

It is not an unprimeable number, because it can be changed into a prime (205398023) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 12849 + ... + 23997.

It is an arithmetic number, because the mean of its divisors is an integer number (13045500).

Almost surely, 2^205398027 is an apocalyptic number.

205398027 is a deficient number, since it is larger than the sum of its proper divisors (107693973).

205398027 is a wasteful number, since it uses less digits than its factorization.

205398027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11267 (or 11264 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 205398027 is about 14331.7140286848. The cubic root of 205398027 is about 590.0182192976.

The spelling of 205398027 in words is "two hundred five million, three hundred ninety-eight thousand, twenty-seven".