201668828 has 6 divisors (see below), whose sum is σ = 352920456. Its totient is φ = 100834412.

The previous prime is 201668809. The next prime is 201668837. The reversal of 201668828 is 828866102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25208600 + ... + 25208607.

It is an arithmetic number, because the mean of its divisors is an integer number (58820076).

Almost surely, 2^201668828 is an apocalyptic number.

It is an amenable number.

201668828 is a deficient number, since it is larger than the sum of its proper divisors (151251628).

201668828 is a wasteful number, since it uses less digits than its factorization.

201668828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50417211 (or 50417209 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 201668828 is about 14201.0150341446. The cubic root of 201668828 is about 586.4256053060.

The spelling of 201668828 in words is "two hundred one million, six hundred sixty-eight thousand, eight hundred twenty-eight".