2113856 has 14 divisors (see below), whose sum is σ = 4194810. Its totient is φ = 1056896.

The previous prime is 2113843. The next prime is 2113873. The reversal of 2113856 is 6583112.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 1032256 = 1040^2 + 1016^2 .

It is a d-powerful number, because it can be written as 2¹³ + 1 + 1 + 3⁶ + 8⁷ + 5 + 6⁵ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16451 + ... + 16578.

2^2113856 is an apocalyptic number.

It is an amenable number.

2113856 is a deficient number, since it is larger than the sum of its proper divisors (2080954).

2113856 is an equidigital number, since it uses as much as digits as its factorization.

2113856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33041 (or 33031 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 2113856 is about 1453.9105887227. The cubic root of 2113856 is about 128.3389454265.

Adding to 2113856 its reverse (6583112), we get a palindrome (8696968).

The spelling of 2113856 in words is "two million, one hundred thirteen thousand, eight hundred fifty-six".