10287987 has 8 divisors (see below), whose sum is σ = 14439360. Its totient is φ = 6497640.

The previous prime is 10287983. The next prime is 10288027. The reversal of 10287987 is 78978201.

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

It is not a de Polignac number, because 10287987 - 2² = 10287983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10287983) 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, 90189 + ... + 90302.

It is an arithmetic number, because the mean of its divisors is an integer number (1804920).

Almost surely, 2^10287987 is an apocalyptic number.

10287987 is a deficient number, since it is larger than the sum of its proper divisors (4151373).

10287987 is a wasteful number, since it uses less digits than its factorization.

10287987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180513.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 10287987 is about 3207.4892049701. The cubic root of 10287987 is about 217.4920911380.

The spelling of 10287987 in words is "ten million, two hundred eighty-seven thousand, nine hundred eighty-seven".