23520222 has 36 divisors (see below), whose sum is σ = 56019600. Its totient is φ = 7126680.

The previous prime is 23520221. The next prime is 23520223. The reversal of 23520222 is 22202532.

It is an interprime number because it is at equal distance from previous prime (23520221) and next prime (23520223).

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 = 23520195 and 23520204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23520221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3222 + ... + 7577.

It is an arithmetic number, because the mean of its divisors is an integer number (1556100).

Almost surely, 2^23520222 is an apocalyptic number.

23520222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23520222 is an abundant number, since it is smaller than the sum of its proper divisors (32499378).

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

23520222 is a wasteful number, since it uses less digits than its factorization.

23520222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10829 (or 10815 counting only the distinct ones).

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

The square root of 23520222 is about 4849.7651489531. The cubic root of 23520222 is about 286.5148517104.

Adding to 23520222 its reverse (22202532), we get a palindrome (45722754).

The spelling of 23520222 in words is "twenty-three million, five hundred twenty thousand, two hundred twenty-two".