11720256 has 28 divisors (see below), whose sum is σ = 31010352. Its totient is φ = 3906688.

The previous prime is 11720251. The next prime is 11720257. The reversal of 11720256 is 65202711.

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 (11720251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30330 + ... + 30713.

Almost surely, 2^11720256 is an apocalyptic number.

11720256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11720256 is an abundant number, since it is smaller than the sum of its proper divisors (19290096).

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

11720256 is an equidigital number, since it uses as much as digits as its factorization.

11720256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61058 (or 61048 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 11720256 is about 3423.4859427198. The cubic root of 11720256 is about 227.1498037623.

Adding to 11720256 its reverse (65202711), we get a palindrome (76922967).

The spelling of 11720256 in words is "eleven million, seven hundred twenty thousand, two hundred fifty-six".