201688338 has 16 divisors (see below), whose sum is σ = 403525440. Its totient is φ = 67204656.

The previous prime is 201688303. The next prime is 201688339. The reversal of 201688338 is 833886102.

It is a junction number, because it is equal to n+sod(n) for n = 201688296 and 201688305.

It is not an unprimeable number, because it can be changed into a prime (201688339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19848 + ... + 28236.

It is an arithmetic number, because the mean of its divisors is an integer number (25220340).

Almost surely, 2^201688338 is an apocalyptic number.

201688338 is an abundant number, since it is smaller than the sum of its proper divisors (201837102).

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

201688338 is a wasteful number, since it uses less digits than its factorization.

201688338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12401.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 201688338 is about 14201.7019402605. The cubic root of 201688338 is about 586.4445155077. Note that the first 3 decimals are identical.

The spelling of 201688338 in words is "two hundred one million, six hundred eighty-eight thousand, three hundred thirty-eight".