10287999 has 8 divisors (see below), whose sum is σ = 15241520. Its totient is φ = 6858648.

The previous prime is 10287983. The next prime is 10288027. The reversal of 10287999 is 99978201.

It is not a de Polignac number, because 10287999 - 2⁴ = 10287983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10287919) 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, 190492 + ... + 190545.

It is an arithmetic number, because the mean of its divisors is an integer number (1905190).

Almost surely, 2^10287999 is an apocalyptic number.

10287999 is a deficient number, since it is larger than the sum of its proper divisors (4953521).

10287999 is an equidigital number, since it uses as much as digits as its factorization.

10287999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381046 (or 381040 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 10287999 is about 3207.4910755916. The cubic root of 10287999 is about 217.4921756995.

The spelling of 10287999 in words is "ten million, two hundred eighty-seven thousand, nine hundred ninety-nine".