22220352 has 224 divisors, whose sum is σ = 81930240. Its totient is φ = 5736960.

The previous prime is 22220339. The next prime is 22220357. The reversal of 22220352 is 25302222.

It is a tau number, because it is divible by the number of its divisors (224).

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

It is not an unprimeable number, because it can be changed into a prime (22220357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132973 + ... + 133139.

It is an arithmetic number, because the mean of its divisors is an integer number (365760).

Almost surely, 2^22220352 is an apocalyptic number.

22220352 is a gapful number since it is divisible by the number (22) 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 22220352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40965120).

22220352 is an abundant number, since it is smaller than the sum of its proper divisors (59709888).

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

22220352 is a wasteful number, since it uses less digits than its factorization.

22220352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22220352 is about 4713.8468367142. The cubic root of 22220352 is about 281.1363345134.

Adding to 22220352 its reverse (25302222), we get a palindrome (47522574).

The spelling of 22220352 in words is "twenty-two million, two hundred twenty thousand, three hundred fifty-two".