2201988 has 12 divisors (see below), whose sum is σ = 5138000. Its totient is φ = 733992.

The previous prime is 2201977. The next prime is 2201989. The reversal of 2201988 is 8891022.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2201989) 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, 91738 + ... + 91761.

2^2201988 is an apocalyptic number.

It is an amenable number.

2201988 is an abundant number, since it is smaller than the sum of its proper divisors (2936012).

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

2201988 is a wasteful number, since it uses less digits than its factorization.

2201988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183506 (or 183504 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 2201988 is about 1483.9097007568. The cubic root of 2201988 is about 130.0983082818.

The spelling of 2201988 in words is "two million, two hundred one thousand, nine hundred eighty-eight".