205392402 has 64 divisors (see below), whose sum is σ = 496419840. Its totient is φ = 62684928.

The previous prime is 205392379. The next prime is 205392409. The reversal of 205392402 is 204293502.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (205392409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30943 + ... + 36989.

It is an arithmetic number, because the mean of its divisors is an integer number (7756560).

Almost surely, 2^205392402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205392402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248209920).

205392402 is an abundant number, since it is smaller than the sum of its proper divisors (291027438).

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

205392402 is a wasteful number, since it uses less digits than its factorization.

205392402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112 (or 6106 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 205392402 is about 14331.5177842404. The cubic root of 205392402 is about 590.0128331978.

The spelling of 205392402 in words is "two hundred five million, three hundred ninety-two thousand, four hundred two".