15456 has 48 divisors (see below), whose sum is σ = 48384. Its totient is φ = 4224.

The previous prime is 15451. The next prime is 15461. The reversal of 15456 is 65451.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (15451) and next prime (15461).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 5.

It is a zygodrome in base 2 and base 5.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 15456.

It is not an unprimeable number, because it can be changed into a prime (15451) by changing a digit.

15456 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661 + ... + 683.

It is an arithmetic number, because the mean of its divisors is an integer number (1008).

2¹⁵⁴⁵⁶ is an apocalyptic number.

15456 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 15456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24192).

15456 is an abundant number, since it is smaller than the sum of its proper divisors (32928).

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

15456 is a wasteful number, since it uses less digits than its factorization.

15456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43 (or 35 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 15456 is about 124.3221621434. The cubic root of 15456 is about 24.9095397391.

It can be divided in two parts, 1545 and 6, that added together give a palindrome (1551).

The spelling of 15456 in words is "fifteen thousand, four hundred fifty-six".