22233420 has 192 divisors, whose sum is σ = 79833600. Its totient is φ = 5080320.

The previous prime is 22233389. The next prime is 22233427. The reversal of 22233420 is 2433222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22233393 and 22233402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22233427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112762 + ... + 112958.

It is an arithmetic number, because the mean of its divisors is an integer number (415800).

Almost surely, 2^22233420 is an apocalyptic number.

22233420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22233420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39916800).

22233420 is an abundant number, since it is smaller than the sum of its proper divisors (57600180).

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

22233420 is a wasteful number, since it uses less digits than its factorization.

22233420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 22233420 is about 4715.2327620172. The cubic root of 22233420 is about 281.1914366954.

Adding to 22233420 its reverse (2433222), we get a palindrome (24666642).

The spelling of 22233420 in words is "twenty-two million, two hundred thirty-three thousand, four hundred twenty".