11401056 has 72 divisors (see below), whose sum is σ = 33493824. Its totient is φ = 3674880.

The previous prime is 11401051. The next prime is 11401057. The reversal of 11401056 is 65010411.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8290 + ... + 9566.

It is an arithmetic number, because the mean of its divisors is an integer number (465192).

Almost surely, 2^11401056 is an apocalyptic number.

11401056 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 11401056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16746912).

11401056 is an abundant number, since it is smaller than the sum of its proper divisors (22092768).

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

11401056 is a wasteful number, since it uses less digits than its factorization.

11401056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 11401056 is about 3376.5449797093. The cubic root of 11401056 is about 225.0686605270.

Adding to 11401056 its reverse (65010411), we get a palindrome (76411467).

The spelling of 11401056 in words is "eleven million, four hundred one thousand, fifty-six".