205900928 has 32 divisors (see below), whose sum is σ = 424345500. Its totient is φ = 99398656.

The previous prime is 205900913. The next prime is 205900931. The reversal of 205900928 is 829009502.

It can be written as a sum of positive squares in 2 ways, for example, as 180418624 + 25482304 = 13432^2 + 5048^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×205900928² = 84790384302522368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24023 + ... + 31446.

Almost surely, 2^205900928 is an apocalyptic number.

It is an amenable number.

205900928 is an abundant number, since it is smaller than the sum of its proper divisors (218444572).

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

205900928 is an equidigital number, since it uses as much as digits as its factorization.

205900928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55512 (or 55500 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 205900928 is about 14349.2483426833. The cubic root of 205900928 is about 590.4993646455.

The spelling of 205900928 in words is "two hundred five million, nine hundred thousand, nine hundred twenty-eight".