2091492 has 72 divisors (see below), whose sum is σ = 5885880. Its totient is φ = 622080.

The previous prime is 2091487. The next prime is 2091497. The reversal of 2091492 is 2941902.

It is an interprime number because it is at equal distance from previous prime (2091487) and next prime (2091497).

It can be written as a sum of positive squares in 4 ways, for example, as 576 + 2090916 = 24^2 + 1446^2 .

It is not an unprimeable number, because it can be changed into a prime (2091497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19134 + ... + 19242.

2^2091492 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 2091492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2942940).

2091492 is an abundant number, since it is smaller than the sum of its proper divisors (3794388).

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

2091492 is a wasteful number, since it uses less digits than its factorization.

2091492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 2091492 is about 1446.1991564097. The cubic root of 2091492 is about 127.8847432542.

The spelling of 2091492 in words is "two million, ninety-one thousand, four hundred ninety-two".