201428871 has 16 divisors (see below), whose sum is σ = 320285184. Its totient is φ = 110097504.

The previous prime is 201428849. The next prime is 201428873. The reversal of 201428871 is 178824102.

It is a happy number.

It is not a de Polignac number, because 201428871 - 2¹⁵ = 201396103 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201428873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208036 + ... + 209001.

It is an arithmetic number, because the mean of its divisors is an integer number (20017824).

Almost surely, 2^201428871 is an apocalyptic number.

201428871 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201428871 is a deficient number, since it is larger than the sum of its proper divisors (118856313).

201428871 is a wasteful number, since it uses less digits than its factorization.

201428871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417070.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 201428871 is about 14192.5639332715. The cubic root of 201428871 is about 586.1929255239.

The spelling of 201428871 in words is "two hundred one million, four hundred twenty-eight thousand, eight hundred seventy-one".