200188690 has 16 divisors (see below), whose sum is σ = 388058328. Its totient is φ = 73915776.

The previous prime is 200188673. The next prime is 200188717. The reversal of 200188690 is 96881002.

It can be written as a sum of positive squares in 4 ways, for example, as 115971361 + 84217329 = 10769^2 + 9177^2 .

It is a super-2 number, since 2×200188690² = 80151023207832200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769827 + ... + 770086.

Almost surely, 2^200188690 is an apocalyptic number.

200188690 is a deficient number, since it is larger than the sum of its proper divisors (187869638).

200188690 is a wasteful number, since it uses less digits than its factorization.

200188690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539933.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 200188690 is about 14148.8052499142. The cubic root of 200188690 is about 584.9874008049.

The spelling of 200188690 in words is "two hundred million, one hundred eighty-eight thousand, six hundred ninety".