2081988 has 36 divisors (see below), whose sum is σ = 5311488. Its totient is φ = 687600.

The previous prime is 2081969. The next prime is 2082019. The reversal of 2081988 is 8891802.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 5245 + ... + 5627.

2^2081988 is an apocalyptic number.

It is an amenable number.

2081988 is an abundant number, since it is smaller than the sum of its proper divisors (3229500).

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

2081988 is a wasteful number, since it uses less digits than its factorization.

2081988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 2081988 is about 1442.9095605754. The cubic root of 2081988 is about 127.6907410358.

The spelling of 2081988 in words is "two million, eighty-one thousand, nine hundred eighty-eight".