205890052 has 24 divisors (see below), whose sum is σ = 370782720. Its totient is φ = 99963360.

The previous prime is 205890017. The next prime is 205890071. The reversal of 205890052 is 250098502.

It is a happy number.

It is a super-3 number, since 3×205890052³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205889996 and 205890023.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96477 + ... + 98587.

It is an arithmetic number, because the mean of its divisors is an integer number (15449280).

Almost surely, 2^205890052 is an apocalyptic number.

It is an amenable number.

205890052 is a deficient number, since it is larger than the sum of its proper divisors (164892668).

205890052 is a wasteful number, since it uses less digits than its factorization.

205890052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811 (or 2809 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 205890052 is about 14348.8693631241. The cubic root of 205890052 is about 590.4889674378.

The spelling of 205890052 in words is "two hundred five million, eight hundred ninety thousand, fifty-two".