10987638 has 8 divisors (see below), whose sum is σ = 21975288. Its totient is φ = 3662544.

The previous prime is 10987633. The next prime is 10987687. The reversal of 10987638 is 83678901.

It is a sphenic number, since it is the product of 3 distinct primes.

10987638 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 10987638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10987633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915631 + ... + 915642.

It is an arithmetic number, because the mean of its divisors is an integer number (2746911).

Almost surely, 2^10987638 is an apocalyptic number.

10987638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

10987638 is a wasteful number, since it uses less digits than its factorization.

10987638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831278.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 10987638 is about 3314.7606248416. The cubic root of 10987638 is about 222.3146661863.

The spelling of 10987638 in words is "ten million, nine hundred eighty-seven thousand, six hundred thirty-eight".