205152102 has 20 divisors (see below), whose sum is σ = 459693036. Its totient is φ = 68383980.

The previous prime is 205152091. The next prime is 205152127. The reversal of 205152102 is 201251502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 633024 + ... + 633347.

Almost surely, 2^205152102 is an apocalyptic number.

205152102 is an abundant number, since it is smaller than the sum of its proper divisors (254540934).

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

205152102 is a wasteful number, since it uses less digits than its factorization.

205152102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266385 (or 1266376 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 205152102 is about 14323.1317106281. The cubic root of 205152102 is about 589.7826471239.

The spelling of 205152102 in words is "two hundred five million, one hundred fifty-two thousand, one hundred two".