2104056 has 80 divisors (see below), whose sum is σ = 6272640. Its totient is φ = 656640.

The previous prime is 2104051. The next prime is 2104057. The reversal of 2104056 is 6504012.

It is a happy number.

It is a super-2 number, since 2×2104056² = 8854103302272, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104051) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10921 + ... + 11111.

It is an arithmetic number, because the mean of its divisors is an integer number (78408).

2^2104056 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 2104056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3136320).

2104056 is an abundant number, since it is smaller than the sum of its proper divisors (4168584).

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

2104056 is a wasteful number, since it uses less digits than its factorization.

2104056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2104056 is about 1450.5364524892. The cubic root of 2104056 is about 128.1403083831.

Adding to 2104056 its reverse (6504012), we get a palindrome (8608068).

The spelling of 2104056 in words is "two million, one hundred four thousand, fifty-six".