205826440 has 16 divisors (see below), whose sum is σ = 463109580. Its totient is φ = 82330560.

The previous prime is 205826419. The next prime is 205826441. The reversal of 205826440 is 44628502.

It can be written as a sum of positive squares in 2 ways, for example, as 203747076 + 2079364 = 14274^2 + 1442^2 .

It is not an unprimeable number, because it can be changed into a prime (205826441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2572791 + ... + 2572870.

Almost surely, 2^205826440 is an apocalyptic number.

205826440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205826440 is an abundant number, since it is smaller than the sum of its proper divisors (257283140).

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

205826440 is a wasteful number, since it uses less digits than its factorization.

205826440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5145672 (or 5145668 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 205826440 is about 14346.6525712446. The cubic root of 205826440 is about 590.4281484830.

The spelling of 205826440 in words is "two hundred five million, eight hundred twenty-six thousand, four hundred forty".