1022628 has 24 divisors (see below), whose sum is σ = 2464000. Its totient is φ = 329760.

The previous prime is 1022611. The next prime is 1022629. The reversal of 1022628 is 8262201.

It is not an unprimeable number, because it can be changed into a prime (1022629) 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 7 ways as a sum of consecutive naturals, for example, 1003 + ... + 1746.

2^1022628 is an apocalyptic number.

It is an amenable number.

1022628 is an abundant number, since it is smaller than the sum of its proper divisors (1441372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022628 is a wasteful number, since it uses less digits than its factorization.

1022628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787 (or 2785 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1022628 is about 1011.2507107538. The cubic root of 1022628 is about 100.7486479427.

Adding to 1022628 its reverse (8262201), we get a palindrome (9284829).

The spelling of 1022628 in words is "one million, twenty-two thousand, six hundred twenty-eight".