206440402 has 16 divisors (see below), whose sum is σ = 355036032. Its totient is φ = 88189920.

The previous prime is 206440373. The next prime is 206440417. The reversal of 206440402 is 204044602.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19174 + ... + 27937.

It is an arithmetic number, because the mean of its divisors is an integer number (22189752).

Almost surely, 2^206440402 is an apocalyptic number.

206440402 is a deficient number, since it is larger than the sum of its proper divisors (148595630).

206440402 is a wasteful number, since it uses less digits than its factorization.

206440402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47433.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 206440402 is about 14368.0340339241. The cubic root of 206440402 is about 591.0146306465.

The spelling of 206440402 in words is "two hundred six million, four hundred forty thousand, four hundred two".