22280160 has 192 divisors, whose sum is σ = 84672000. Its totient is φ = 4810752.

The previous prime is 22280147. The next prime is 22280161. The reversal of 22280160 is 6108222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22280161) 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, 63666 + ... + 64014.

It is an arithmetic number, because the mean of its divisors is an integer number (441000).

Almost surely, 2^22280160 is an apocalyptic number.

22280160 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 22280160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42336000).

22280160 is an abundant number, since it is smaller than the sum of its proper divisors (62391840).

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

22280160 is a wasteful number, since it uses less digits than its factorization.

22280160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 22280160 is about 4720.1864369959. The cubic root of 22280160 is about 281.3883428042.

Adding to 22280160 its reverse (6108222), we get a palindrome (28388382).

The spelling of 22280160 in words is "twenty-two million, two hundred eighty thousand, one hundred sixty".