23222136 has 128 divisors (see below), whose sum is σ = 72161280. Its totient is φ = 6076416.

The previous prime is 23222099. The next prime is 23222137. The reversal of 23222136 is 63122232.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23222137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134146 + ... + 134318.

It is an arithmetic number, because the mean of its divisors is an integer number (563760).

Almost surely, 2^23222136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23222136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36080640).

23222136 is an abundant number, since it is smaller than the sum of its proper divisors (48939144).

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

23222136 is a wasteful number, since it uses less digits than its factorization.

23222136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 249 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 23222136 is about 4818.9351520849. The cubic root of 23222136 is about 285.2993100512.

Adding to 23222136 its reverse (63122232), we get a palindrome (86344368).

The spelling of 23222136 in words is "twenty-three million, two hundred twenty-two thousand, one hundred thirty-six".