10812987 has 8 divisors (see below), whose sum is σ = 16019280. Its totient is φ = 7208640.

The previous prime is 10812983. The next prime is 10813001. The reversal of 10812987 is 78921801.

It is not a de Polignac number, because 10812987 - 2² = 10812983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10812983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200214 + ... + 200267.

It is an arithmetic number, because the mean of its divisors is an integer number (2002410).

Almost surely, 2^10812987 is an apocalyptic number.

10812987 is a deficient number, since it is larger than the sum of its proper divisors (5206293).

10812987 is an equidigital number, since it uses as much as digits as its factorization.

10812987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400490 (or 400484 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 10812987 is about 3288.3106605064. The cubic root of 10812987 is about 221.1304553855.

The spelling of 10812987 in words is "ten million, eight hundred twelve thousand, nine hundred eighty-seven".