205402212 has 36 divisors (see below), whose sum is σ = 525790720. Its totient is φ = 67599792.

The previous prime is 205402199. The next prime is 205402243. The reversal of 205402212 is 212204502.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33268 + ... + 38955.

Almost surely, 2^205402212 is an apocalyptic number.

It is an amenable number.

205402212 is an abundant number, since it is smaller than the sum of its proper divisors (320388508).

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

205402212 is a wasteful number, since it uses less digits than its factorization.

205402212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72312 (or 72307 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 205402212 is about 14331.8600328080. The cubic root of 205402212 is about 590.0222264920.

Adding to 205402212 its reverse (212204502), we get a palindrome (417606714).

The spelling of 205402212 in words is "two hundred five million, four hundred two thousand, two hundred twelve".