2019872 has 48 divisors (see below), whose sum is σ = 4354560. Its totient is φ = 918528.

The previous prime is 2019869. The next prime is 2019881. The reversal of 2019872 is 2789102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25529 + ... + 25607.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2^2019872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2019872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2177280).

2019872 is an abundant number, since it is smaller than the sum of its proper divisors (2334688).

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

2019872 is a wasteful number, since it uses less digits than its factorization.

2019872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2019872 is about 1421.2220093990. Note that the first 3 decimals coincide. The cubic root of 2019872 is about 126.4080163692.

The spelling of 2019872 in words is "two million, nineteen thousand, eight hundred seventy-two".