206404002 has 24 divisors (see below), whose sum is σ = 511095936. Its totient is φ = 58972536.

The previous prime is 206403997. The next prime is 206404027. The reversal of 206404002 is 200404602.

206404002 is a `hidden beast` number, since 20 + 640 + 4 + 0 + 0 + 2 = 666.

206404002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×206404002² = 85205224083232008, which contains 22 as substring.

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, 818938 + ... + 819189.

It is an arithmetic number, because the mean of its divisors is an integer number (21295664).

Almost surely, 2^206404002 is an apocalyptic number.

206404002 is an abundant number, since it is smaller than the sum of its proper divisors (304691934).

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

206404002 is a wasteful number, since it uses less digits than its factorization.

206404002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638142 (or 1638139 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 206404002 is about 14366.7672772966. The cubic root of 206404002 is about 590.9798922960.

Adding to 206404002 its reverse (200404602), we get a palindrome (406808604).

It can be divided in two parts, 20640 and 4002, that added together give a palindrome (24642).

The spelling of 206404002 in words is "two hundred six million, four hundred four thousand, two".