1022000 has 80 divisors (see below), whose sum is σ = 2862912. Its totient is φ = 345600.

The previous prime is 1021973. The next prime is 1022011. The reversal of 1022000 is 2201.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a nialpdrome in base 16.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13964 + ... + 14036.

2^1022000 is an apocalyptic number.

1022000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1022000 is the 584-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1431456).

1022000 is an abundant number, since it is smaller than the sum of its proper divisors (1840912).

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

1022000 is an equidigital number, since it uses as much as digits as its factorization.

1022000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 1022000 is about 1010.9401564880. The cubic root of 1022000 is about 100.7280203352.

Adding to 1022000 its reverse (2201), we get a palindrome (1024201).

The spelling of 1022000 in words is "one million, twenty-two thousand".