1009220 has 12 divisors (see below), whose sum is σ = 2119404. Its totient is φ = 403680.

The previous prime is 1009207. The next prime is 1009237. The reversal of 1009220 is 229001.

1009220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 602176 + 407044 = 776^2 + 638^2 .

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1009195 and 1009204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25211 + ... + 25250.

It is an arithmetic number, because the mean of its divisors is an integer number (176617).

2^1009220 is an apocalyptic number.

1009220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1009220 is an abundant number, since it is smaller than the sum of its proper divisors (1110184).

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

1009220 is a wasteful number, since it uses less digits than its factorization.

1009220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50470 (or 50468 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1009220 is about 1004.5994226556. The cubic root of 1009220 is about 100.3063936041.

The spelling of 1009220 in words is "one million, nine thousand, two hundred twenty".