13730256 has 80 divisors (see below), whose sum is σ = 40523200. Its totient is φ = 4447872.

The previous prime is 13730231. The next prime is 13730261. The reversal of 13730256 is 65203731.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15555 + ... + 16413.

It is an arithmetic number, because the mean of its divisors is an integer number (506540).

Almost surely, 2^13730256 is an apocalyptic number.

13730256 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 13730256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20261600).

13730256 is an abundant number, since it is smaller than the sum of its proper divisors (26792944).

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

13730256 is a wasteful number, since it uses less digits than its factorization.

13730256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 13730256 is about 3705.4360067339. The cubic root of 13730256 is about 239.4562690831.

Adding to 13730256 its reverse (65203731), we get a palindrome (78933987).

The spelling of 13730256 in words is "thirteen million, seven hundred thirty thousand, two hundred fifty-six".