1022156 has 12 divisors (see below), whose sum is σ = 1827168. Its totient is φ = 500112.

The previous prime is 1022141. The next prime is 1022167. The reversal of 1022156 is 6512201.

It is a zygodrome in base 2.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2531 + ... + 2906.

It is an arithmetic number, because the mean of its divisors is an integer number (152264).

2^1022156 is an apocalyptic number.

It is an amenable number.

1022156 is a deficient number, since it is larger than the sum of its proper divisors (805012).

1022156 is a wasteful number, since it uses less digits than its factorization.

1022156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488 (or 5486 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1022156 is about 1011.0173094463. The cubic root of 1022156 is about 100.7331451792.

Adding to 1022156 its reverse (6512201), we get a palindrome (7534357).

It can be divided in two parts, 102 and 2156, that multiplied together give a palindrome (219912).

The spelling of 1022156 in words is "one million, twenty-two thousand, one hundred fifty-six".