22155330 has 64 divisors (see below), whose sum is σ = 57231360. Its totient is φ = 5471424.

The previous prime is 22155317. The next prime is 22155361. The reversal of 22155330 is 3355122.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22155297 and 22155306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26377 + ... + 27203.

It is an arithmetic number, because the mean of its divisors is an integer number (894240).

Almost surely, 2^22155330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22155330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28615680).

22155330 is an abundant number, since it is smaller than the sum of its proper divisors (35076030).

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

22155330 is a wasteful number, since it uses less digits than its factorization.

22155330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 22155330 is about 4706.9448690207. The cubic root of 22155330 is about 280.8618428167.

The spelling of 22155330 in words is "twenty-two million, one hundred fifty-five thousand, three hundred thirty".