11402544 has 80 divisors (see below), whose sum is σ = 31109120. Its totient is φ = 3594240.

The previous prime is 11402543. The next prime is 11402561. The reversal of 11402544 is 44520411.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11402544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11402543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117504 + ... + 117600.

It is an arithmetic number, because the mean of its divisors is an integer number (388864).

Almost surely, 2^11402544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11402544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15554560).

11402544 is an abundant number, since it is smaller than the sum of its proper divisors (19706576).

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

11402544 is a wasteful number, since it uses less digits than its factorization.

11402544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 11402544 is about 3376.7653160976. The cubic root of 11402544 is about 225.0784516551.

Adding to 11402544 its reverse (44520411), we get a palindrome (55922955).

The spelling of 11402544 in words is "eleven million, four hundred two thousand, five hundred forty-four".