2043390 has 16 divisors (see below), whose sum is σ = 4904208. Its totient is φ = 544896.

The previous prime is 2043341. The next prime is 2043397. The reversal of 2043390 is 933402.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34027 + ... + 34086.

It is an arithmetic number, because the mean of its divisors is an integer number (306513).

2^2043390 is an apocalyptic number.

2043390 is an abundant number, since it is smaller than the sum of its proper divisors (2860818).

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

2043390 is a wasteful number, since it uses less digits than its factorization.

2043390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68123.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 2043390 is about 1429.4719304694. The cubic root of 2043390 is about 126.8967271712.

Adding to 2043390 its reverse (933402), we get a palindrome (2976792).

The spelling of 2043390 in words is "two million, forty-three thousand, three hundred ninety".