1009020 has 48 divisors (see below), whose sum is σ = 2878848. Its totient is φ = 264000.

The previous prime is 1009007. The next prime is 1009037. The reversal of 1009020 is 209001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1008987 and 1009005.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3895 + ... + 4145.

It is an arithmetic number, because the mean of its divisors is an integer number (59976).

2^1009020 is an apocalyptic number.

1009020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 1004×1005.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1009020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439424).

1009020 is an abundant number, since it is smaller than the sum of its proper divisors (1869828).

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

1009020 is a wasteful number, since it uses less digits than its factorization.

1009020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1009020 is about 1004.4998755600. The cubic root of 1009020 is about 100.2997671652.

The spelling of 1009020 in words is "one million, nine thousand, twenty".