23222000 has 80 divisors (see below), whose sum is σ = 59540832. Its totient is φ = 8729600.

The previous prime is 23221997. The next prime is 23222033. The reversal of 23222000 is 22232.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×23222000² = 1078522568000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33659 + ... + 34341.

Almost surely, 2^23222000 is an apocalyptic number.

23222000 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 23222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29770416).

23222000 is an abundant number, since it is smaller than the sum of its proper divisors (36318832).

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

23222000 is a wasteful number, since it uses less digits than its factorization.

23222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 23222000 is about 4818.9210410630. The cubic root of 23222000 is about 285.2987531001.

Adding to 23222000 its reverse (22232), we get a palindrome (23244232).

The spelling of 23222000 in words is "twenty-three million, two hundred twenty-two thousand".