1090287 has 16 divisors (see below), whose sum is σ = 1762560. Its totient is φ = 660600.

The previous prime is 1090273. The next prime is 1090303. The reversal of 1090287 is 7820901.

It is not a de Polignac number, because 1090287 - 2⁸ = 1090031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1090287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090217) 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 15 ways as a sum of consecutive naturals, for example, 1539 + ... + 2132.

It is an arithmetic number, because the mean of its divisors is an integer number (110160).

2^1090287 is an apocalyptic number.

1090287 is a deficient number, since it is larger than the sum of its proper divisors (672273).

1090287 is a wasteful number, since it uses less digits than its factorization.

1090287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691 (or 3685 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1090287 is about 1044.1680899166. The cubic root of 1090287 is about 102.9232783993.

The spelling of 1090287 in words is "one million, ninety thousand, two hundred eighty-seven".