11238987 has 4 divisors (see below), whose sum is σ = 14985320. Its totient is φ = 7492656.

The previous prime is 11238971. The next prime is 11239003. The reversal of 11238987 is 78983211.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11238971) and next prime (11239003).

It is not a de Polignac number, because 11238987 - 2⁴ = 11238971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11238907) 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, 1873162 + ... + 1873167.

It is an arithmetic number, because the mean of its divisors is an integer number (3746330).

Almost surely, 2^11238987 is an apocalyptic number.

11238987 is a deficient number, since it is larger than the sum of its proper divisors (3746333).

11238987 is an equidigital number, since it uses as much as digits as its factorization.

11238987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3746332.

The product of its digits is 24192, while the sum is 39.

The square root of 11238987 is about 3352.4598431599. The cubic root of 11238987 is about 223.9970968480.

The spelling of 11238987 in words is "eleven million, two hundred thirty-eight thousand, nine hundred eighty-seven".