201644012 has 12 divisors (see below), whose sum is σ = 359535456. Its totient is φ = 98919600.

The previous prime is 201643993. The next prime is 201644029. The reversal of 201644012 is 210446102.

201644012 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201644012² = 81320615150912288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475364 + ... + 475787.

It is an arithmetic number, because the mean of its divisors is an integer number (29961288).

Almost surely, 2^201644012 is an apocalyptic number.

It is an amenable number.

201644012 is a deficient number, since it is larger than the sum of its proper divisors (157891444).

201644012 is a wasteful number, since it uses less digits than its factorization.

201644012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951208 (or 951206 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 201644012 is about 14200.1412669029. The cubic root of 201644012 is about 586.4015504650.

The spelling of 201644012 in words is "two hundred one million, six hundred forty-four thousand, twelve".