205011402 has 8 divisors (see below), whose sum is σ = 410022816. Its totient is φ = 68337132.

The previous prime is 205011379. The next prime is 205011407. The reversal of 205011402 is 204110502.

It is a sphenic number, since it is the product of 3 distinct primes.

205011402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (205011407) 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 3 ways as a sum of consecutive naturals, for example, 17084278 + ... + 17084289.

It is an arithmetic number, because the mean of its divisors is an integer number (51252852).

Almost surely, 2^205011402 is an apocalyptic number.

205011402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

205011402 is a wasteful number, since it uses less digits than its factorization.

205011402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34168572.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 205011402 is about 14318.2192328515. The cubic root of 205011402 is about 589.6477855658.

Adding to 205011402 its reverse (204110502), we get a palindrome (409121904).

The spelling of 205011402 in words is "two hundred five million, eleven thousand, four hundred two".