10238987 has 4 divisors (see below), whose sum is σ = 11169816. Its totient is φ = 9308160.

The previous prime is 10238983. The next prime is 10238993. The reversal of 10238987 is 78983201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78983201 = 11 ⋅7180291.

It is a cyclic number.

It is not a de Polignac number, because 10238987 - 2² = 10238983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10238987.

It is not an unprimeable number, because it can be changed into a prime (10238983) 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, 465398 + ... + 465419.

It is an arithmetic number, because the mean of its divisors is an integer number (2792454).

Almost surely, 2^10238987 is an apocalyptic number.

10238987 is a deficient number, since it is larger than the sum of its proper divisors (930829).

10238987 is an equidigital number, since it uses as much as digits as its factorization.

10238987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930828.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 10238987 is about 3199.8417148353. The cubic root of 10238987 is about 217.1462484012.

The spelling of 10238987 in words is "ten million, two hundred thirty-eight thousand, nine hundred eighty-seven".