1022263 has 8 divisors (see below), whose sum is σ = 1123200. Its totient is φ = 922680.

The previous prime is 1022251. The next prime is 1022291. The reversal of 1022263 is 3622201.

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

It is a de Polignac number, because none of the positive numbers 2^k-1022263 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 (1022243) 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 7 ways as a sum of consecutive naturals, for example, 1956 + ... + 2422.

It is an arithmetic number, because the mean of its divisors is an integer number (140400).

2^1022263 is an apocalyptic number.

1022263 is a deficient number, since it is larger than the sum of its proper divisors (100937).

1022263 is a wasteful number, since it uses less digits than its factorization.

1022263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1022263 is about 1011.0702250586. The cubic root of 1022263 is about 100.7366599951.

Adding to 1022263 its reverse (3622201), we get a palindrome (4644464).

The spelling of 1022263 in words is "one million, twenty-two thousand, two hundred sixty-three".