2103456 has 24 divisors (see below), whose sum is σ = 5521824. Its totient is φ = 701120.

The previous prime is 2103449. The next prime is 2103473. The reversal of 2103456 is 6543012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10860 + ... + 11051.

It is an arithmetic number, because the mean of its divisors is an integer number (230076).

2^2103456 is an apocalyptic number.

It is an amenable number.

2103456 is an abundant number, since it is smaller than the sum of its proper divisors (3418368).

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

2103456 is a wasteful number, since it uses less digits than its factorization.

2103456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21924 (or 21916 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2103456 is about 1450.3296177076. The cubic root of 2103456 is about 128.1281269116.

Adding to 2103456 its reverse (6543012), we get a palindrome (8646468).

The spelling of 2103456 in words is "two million, one hundred three thousand, four hundred fifty-six".