11428387 has 4 divisors (see below), whose sum is σ = 11436480. Its totient is φ = 11420296.

The previous prime is 11428363. The next prime is 11428409. The reversal of 11428387 is 78382411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11428387 - 2⁷ = 11428259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11428357) 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, 1312 + ... + 4957.

It is an arithmetic number, because the mean of its divisors is an integer number (2859120).

Almost surely, 2^11428387 is an apocalyptic number.

11428387 is a deficient number, since it is larger than the sum of its proper divisors (8093).

11428387 is an equidigital number, since it uses as much as digits as its factorization.

11428387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8092.

The product of its digits is 10752, while the sum is 34.

The square root of 11428387 is about 3380.5897414504. The cubic root of 11428387 is about 225.2483644272.

The spelling of 11428387 in words is "eleven million, four hundred twenty-eight thousand, three hundred eighty-seven".