2090340 has 144 divisors (see below), whose sum is σ = 7660800. Its totient is φ = 471744.

The previous prime is 2090329. The next prime is 2090351. The reversal of 2090340 is 430902.

It is an interprime number because it is at equal distance from previous prime (2090329) and next prime (2090351).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26421 + ... + 26499.

It is an arithmetic number, because the mean of its divisors is an integer number (53200).

2^2090340 is an apocalyptic number.

2090340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2090340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3830400).

2090340 is an abundant number, since it is smaller than the sum of its proper divisors (5570460).

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

2090340 is a wasteful number, since it uses less digits than its factorization.

2090340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2090340 is about 1445.8008161569. The cubic root of 2090340 is about 127.8612591766.

The spelling of 2090340 in words is "two million, ninety thousand, three hundred forty".