2403456 has 64 divisors (see below), whose sum is σ = 6976800. Its totient is φ = 727040.

The previous prime is 2403451. The next prime is 2403463. The reversal of 2403456 is 6543042.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (2403451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3940 + ... + 4508.

2^2403456 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 2403456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3488400).

2403456 is an abundant number, since it is smaller than the sum of its proper divisors (4573344).

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

2403456 is a wasteful number, since it uses less digits than its factorization.

2403456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2403456 is about 1550.3083564246. The cubic root of 2403456 is about 133.9508247568.

Adding to 2403456 its reverse (6543042), we get a palindrome (8946498).

It can be divided in two parts, 24034 and 56, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 2403456 in words is "two million, four hundred three thousand, four hundred fifty-six".