205214928 has 40 divisors (see below), whose sum is σ = 530659488. Its totient is φ = 68337792.

The previous prime is 205214917. The next prime is 205214929. The reversal of 205214928 is 829412502.

It is a super-2 number, since 2×205214928² = 84226333348090368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205214929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81951 + ... + 84417.

Almost surely, 2^205214928 is an apocalyptic number.

It is an amenable number.

205214928 is an abundant number, since it is smaller than the sum of its proper divisors (325444560).

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

205214928 is a wasteful number, since it uses less digits than its factorization.

205214928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211 (or 4205 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 205214928 is about 14325.3247083618. The cubic root of 205214928 is about 589.8428462028.

The spelling of 205214928 in words is "two hundred five million, two hundred fourteen thousand, nine hundred twenty-eight".