201329646 has 32 divisors (see below), whose sum is σ = 467731968. Its totient is φ = 56579040.

The previous prime is 201329633. The next prime is 201329651. The reversal of 201329646 is 646923102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36730 + ... + 41853.

It is an arithmetic number, because the mean of its divisors is an integer number (14616624).

Almost surely, 2^201329646 is an apocalyptic number.

201329646 is an abundant number, since it is smaller than the sum of its proper divisors (266402322).

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

201329646 is a wasteful number, since it uses less digits than its factorization.

201329646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78656.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 201329646 is about 14189.0678340756. The cubic root of 201329646 is about 586.0966557320.

The spelling of 201329646 in words is "two hundred one million, three hundred twenty-nine thousand, six hundred forty-six".