2091972 has 12 divisors (see below), whose sum is σ = 4881296. Its totient is φ = 697320.

The previous prime is 2091959. The next prime is 2091983. The reversal of 2091972 is 2791902.

2091972 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87154 + ... + 87177.

2^2091972 is an apocalyptic number.

It is an amenable number.

2091972 is an abundant number, since it is smaller than the sum of its proper divisors (2789324).

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

2091972 is a wasteful number, since it uses less digits than its factorization.

2091972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174338 (or 174336 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 2091972 is about 1446.3650991365. The cubic root of 2091972 is about 127.8945257414.

The spelling of 2091972 in words is "two million, ninety-one thousand, nine hundred seventy-two".