22509330 has 16 divisors (see below), whose sum is σ = 54022464. Its totient is φ = 6002480.

The previous prime is 22509329. The next prime is 22509371. The reversal of 22509330 is 3390522.

It is a self number, because there is not a number n which added to its sum of digits gives 22509330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375126 + ... + 375185.

It is an arithmetic number, because the mean of its divisors is an integer number (3376404).

Almost surely, 2^22509330 is an apocalyptic number.

22509330 is an abundant number, since it is smaller than the sum of its proper divisors (31513134).

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

22509330 is a wasteful number, since it uses less digits than its factorization.

22509330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750321.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 22509330 is about 4744.3998566731. The cubic root of 22509330 is about 282.3498248992.

Adding to 22509330 its reverse (3390522), we get a palindrome (25899852).

The spelling of 22509330 in words is "twenty-two million, five hundred nine thousand, three hundred thirty".