22235620 has 48 divisors (see below), whose sum is σ = 51928128. Its totient is φ = 7928960.

The previous prime is 22235611. The next prime is 22235623. The reversal of 22235620 is 2653222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22235591 and 22235600.

It is not an unprimeable number, because it can be changed into a prime (22235623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10707 + ... + 12613.

It is an arithmetic number, because the mean of its divisors is an integer number (1081836).

Almost surely, 2^22235620 is an apocalyptic number.

22235620 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 22235620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25964064).

22235620 is an abundant number, since it is smaller than the sum of its proper divisors (29692508).

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

22235620 is a wasteful number, since it uses less digits than its factorization.

22235620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980 (or 1978 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 22235620 is about 4715.4660427152. The cubic root of 22235620 is about 281.2007110334.

Adding to 22235620 its reverse (2653222), we get a palindrome (24888842).

The spelling of 22235620 in words is "twenty-two million, two hundred thirty-five thousand, six hundred twenty".