22723000 has 64 divisors (see below), whose sum is σ = 54961920. Its totient is φ = 8784000.

The previous prime is 22722991. The next prime is 22723003. The reversal of 22723000 is 32722.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22723003) 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, 30634 + ... + 31366.

It is an arithmetic number, because the mean of its divisors is an integer number (858780).

Almost surely, 2^22723000 is an apocalyptic number.

22723000 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 22723000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27480960).

22723000 is an abundant number, since it is smaller than the sum of its proper divisors (32238920).

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

22723000 is a wasteful number, since it uses less digits than its factorization.

22723000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 22723000 is about 4766.8647977470. The cubic root of 22723000 is about 283.2404155137.

Adding to 22723000 its reverse (32722), we get a palindrome (22755722).

The spelling of 22723000 in words is "twenty-two million, seven hundred twenty-three thousand".