2113456 has 20 divisors (see below), whose sum is σ = 4227904. Its totient is φ = 1022400.

The previous prime is 2113451. The next prime is 2113459. The reversal of 2113456 is 6543112.

2113456 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2113451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1635 + ... + 2626.

2^2113456 is an apocalyptic number.

It is an amenable number.

2113456 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2113456 is a wasteful number, since it uses less digits than its factorization.

2113456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300 (or 4294 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 2113456 is about 1453.7730221737. The cubic root of 2113456 is about 128.3308498236.

Adding to 2113456 its reverse (6543112), we get a palindrome (8656568).

The spelling of 2113456 in words is "two million, one hundred thirteen thousand, four hundred fifty-six".