22153560 has 128 divisors (see below), whose sum is σ = 78140160. Its totient is φ = 4953600.

The previous prime is 22153543. The next prime is 22153597. The reversal of 22153560 is 6535122.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22153560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16515 + ... + 17805.

It is an arithmetic number, because the mean of its divisors is an integer number (610470).

Almost surely, 2^22153560 is an apocalyptic number.

22153560 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 22153560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39070080).

22153560 is an abundant number, since it is smaller than the sum of its proper divisors (55986600).

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

22153560 is a wasteful number, since it uses less digits than its factorization.

22153560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 22153560 is about 4706.7568452173. The cubic root of 22153560 is about 280.8543632215.

Adding to 22153560 its reverse (6535122), we get a palindrome (28688682).

It can be divided in two parts, 2215 and 3560, that added together give a palindrome (5775).

The spelling of 22153560 in words is "twenty-two million, one hundred fifty-three thousand, five hundred sixty".