13403456 has 56 divisors (see below), whose sum is σ = 29504640. Its totient is φ = 5990400.

The previous prime is 13403449. The next prime is 13403461. The reversal of 13403456 is 65430431.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55496 + ... + 55736.

Almost surely, 2^13403456 is an apocalyptic number.

13403456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13403456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14752320).

13403456 is an abundant number, since it is smaller than the sum of its proper divisors (16101184).

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

13403456 is a wasteful number, since it uses less digits than its factorization.

13403456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 13403456 is about 3661.0730667388. The cubic root of 13403456 is about 237.5411917473.

Adding to 13403456 its reverse (65430431), we get a palindrome (78833887).

The spelling of 13403456 in words is "thirteen million, four hundred three thousand, four hundred fifty-six".