11427288 has 16 divisors (see below), whose sum is σ = 28568280. Its totient is φ = 3809088.

The previous prime is 11427287. The next prime is 11427289. The reversal of 11427288 is 88272411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11427287) and next prime (11427289).

It is a super-2 number, since 2×11427288² = 261165822069888, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11427287) 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, 238045 + ... + 238092.

Almost surely, 2^11427288 is an apocalyptic number.

It is an amenable number.

11427288 is an abundant number, since it is smaller than the sum of its proper divisors (17140992).

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

11427288 is a wasteful number, since it uses less digits than its factorization.

11427288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476146 (or 476142 counting only the distinct ones).

The product of its digits is 7168, while the sum is 33.

The square root of 11427288 is about 3380.4271919389. The cubic root of 11427288 is about 225.2411439306.

Adding to 11427288 its reverse (88272411), we get a palindrome (99699699).

The spelling of 11427288 in words is "eleven million, four hundred twenty-seven thousand, two hundred eighty-eight".