9021380 has 12 divisors (see below), whose sum is σ = 18944940. Its totient is φ = 3608544.

The previous prime is 9021379. The next prime is 9021401. The reversal of 9021380 is 831209.

It can be written as a sum of positive squares in 2 ways, for example, as 1359556 + 7661824 = 1166^2 + 2768^2 .

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, 225515 + ... + 225554.

It is an arithmetic number, because the mean of its divisors is an integer number (1578745).

Almost surely, 2^9021380 is an apocalyptic number.

It is an amenable number.

9021380 is an abundant number, since it is smaller than the sum of its proper divisors (9923560).

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

9021380 is a wasteful number, since it uses less digits than its factorization.

9021380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451078 (or 451076 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 9021380 is about 3003.5612196191. The cubic root of 9021380 is about 208.1729638724.

Adding to 9021380 its reverse (831209), we get a palindrome (9852589).

The spelling of 9021380 in words is "nine million, twenty-one thousand, three hundred eighty".