9021428020 has 24 divisors (see below), whose sum is σ = 20667271968. Its totient is φ = 3280519200.

The previous prime is 9021427999. The next prime is 9021428021. The reversal of 9021428020 is 208241209.

It is a super-2 number, since 2×9021428020² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9021428020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9021428021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20503026 + ... + 20503465.

It is an arithmetic number, because the mean of its divisors is an integer number (861136332).

Almost surely, 2^9021428020 is an apocalyptic number.

It is an amenable number.

9021428020 is an abundant number, since it is smaller than the sum of its proper divisors (11645843948).

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

9021428020 is a wasteful number, since it uses less digits than its factorization.

9021428020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41006511 (or 41006509 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 9021428020 is about 94981.1982447053. The cubic root of 9021428020 is about 2081.7333323379.

Adding to 9021428020 its reverse (208241209), we get a palindrome (9229669229).

The spelling of 9021428020 in words is "nine billion, twenty-one million, four hundred twenty-eight thousand, twenty".