201400634 has 8 divisors (see below), whose sum is σ = 302551860. Its totient is φ = 100550016.

The previous prime is 201400631. The next prime is 201400663. The reversal of 201400634 is 436004102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 160402225 + 40998409 = 12665^2 + 6403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (201400631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73469 + ... + 76160.

Almost surely, 2^201400634 is an apocalyptic number.

201400634 is a deficient number, since it is larger than the sum of its proper divisors (101151226).

201400634 is a wasteful number, since it uses less digits than its factorization.

201400634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150304.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 201400634 is about 14191.5691169088. The cubic root of 201400634 is about 586.1655327225.

Adding to 201400634 its reverse (436004102), we get a palindrome (637404736).

The spelling of 201400634 in words is "two hundred one million, four hundred thousand, six hundred thirty-four".