9021230640 has 120 divisors (see below), whose sum is σ = 31273676928. Its totient is φ = 2328053760.

The previous prime is 9021230639. The next prime is 9021230711. The reversal of 9021230640 is 460321209.

9021230640 is a `hidden beast` number, since 9 + 0 + 2 + 12 + 3 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179769 + ... + 224408.

Almost surely, 2^9021230640 is an apocalyptic number.

9021230640 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9021230640 is an abundant number, since it is smaller than the sum of its proper divisors (22252446288).

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

9021230640 is a wasteful number, since it uses less digits than its factorization.

9021230640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404227 (or 404218 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 9021230640 is about 94980.1591912753. The cubic root of 9021230640 is about 2081.7181501325.

Adding to 9021230640 its reverse (460321209), we get a palindrome (9481551849).

The spelling of 9021230640 in words is "nine billion, twenty-one million, two hundred thirty thousand, six hundred forty".