11287748 has 18 divisors (see below), whose sum is σ = 20850606. Its totient is φ = 5346144.

The previous prime is 11287747. The next prime is 11287753. The reversal of 11287748 is 84778211.

It can be written as a sum of positive squares in only one way, i.e., 5914624 + 5373124 = 2432^2 + 2318^2 .

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (11287747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2465 + ... + 5352.

It is an arithmetic number, because the mean of its divisors is an integer number (1158367).

Almost surely, 2^11287748 is an apocalyptic number.

It is an amenable number.

11287748 is a deficient number, since it is larger than the sum of its proper divisors (9562858).

11287748 is a wasteful number, since it uses less digits than its factorization.

11287748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859 (or 7838 counting only the distinct ones).

The product of its digits is 25088, while the sum is 38.

The square root of 11287748 is about 3359.7243934585. The cubic root of 11287748 is about 224.3205709800.

The spelling of 11287748 in words is "eleven million, two hundred eighty-seven thousand, seven hundred forty-eight".