11287456 has 24 divisors (see below), whose sum is σ = 23530500. Its totient is φ = 5311488.

The previous prime is 11287453. The next prime is 11287481. The reversal of 11287456 is 65478211.

It can be written as a sum of positive squares in 2 ways, for example, as 10995856 + 291600 = 3316^2 + 540^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (11287453) 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 3 ways as a sum of consecutive naturals, for example, 9831 + ... + 10918.

Almost surely, 2^11287456 is an apocalyptic number.

11287456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11287456 is an abundant number, since it is smaller than the sum of its proper divisors (12243044).

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

11287456 is a wasteful number, since it uses less digits than its factorization.

11287456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20776 (or 20768 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 11287456 is about 3359.6809372320. The cubic root of 11287456 is about 224.3186366652.

The spelling of 11287456 in words is "eleven million, two hundred eighty-seven thousand, four hundred fifty-six".