204686402 has 4 divisors (see below), whose sum is σ = 307029606. Its totient is φ = 102343200.

The previous prime is 204686381. The next prime is 204686423.

It is a happy number.

204686402 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (204686381) and next prime (204686423).

It can be written as a sum of positive squares in only one way, i.e., 149793121 + 54893281 = 12239^2 + 7409^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51171599 + ... + 51171602.

Almost surely, 2^204686402 is an apocalyptic number.

204686402 is a deficient number, since it is larger than the sum of its proper divisors (102343204).

204686402 is a wasteful number, since it uses less digits than its factorization.

204686402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102343203.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 204686402 is about 14306.8655546909. The cubic root of 204686402 is about 589.3360356128.

The spelling of 204686402 in words is "two hundred four million, six hundred eighty-six thousand, four hundred two".