201038634 has 24 divisors (see below), whose sum is σ = 461206980. Its totient is φ = 63070848.

The previous prime is 201038597. The next prime is 201038641. The reversal of 201038634 is 436830102.

It is a happy number.

201038634 is a `hidden beast` number, since 20 + 1 + 0 + 3 + 8 + 634 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 178142409 + 22896225 = 13347^2 + 4785^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201038598 and 201038607.

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, 328189 + ... + 328800.

Almost surely, 2^201038634 is an apocalyptic number.

201038634 is an abundant number, since it is smaller than the sum of its proper divisors (260168346).

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

201038634 is a wasteful number, since it uses less digits than its factorization.

201038634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657014 (or 657011 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 201038634 is about 14178.8093294183. The cubic root of 201038634 is about 585.8141283635.

Adding to 201038634 its reverse (436830102), we get a palindrome (637868736).

The spelling of 201038634 in words is "two hundred one million, thirty-eight thousand, six hundred thirty-four".