1022287 has 12 divisors (see below), whose sum is σ = 1229376. Its totient is φ = 846720.

The previous prime is 1022251. The next prime is 1022291. The reversal of 1022287 is 7822201.

It is not a de Polignac number, because 1022287 - 2¹⁹ = 497999 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 (1022237) 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 11 ways as a sum of consecutive naturals, for example, 1183 + ... + 1855.

It is an arithmetic number, because the mean of its divisors is an integer number (102448).

2^1022287 is an apocalyptic number.

1022287 is a deficient number, since it is larger than the sum of its proper divisors (207089).

1022287 is an equidigital number, since it uses as much as digits as its factorization.

1022287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1022287 is about 1011.0820936007. The cubic root of 1022287 is about 100.7374483314.

Adding to 1022287 its reverse (7822201), we get a palindrome (8844488).

The spelling of 1022287 in words is "one million, twenty-two thousand, two hundred eighty-seven".