23319828 has 72 divisors (see below), whose sum is σ = 69713280. Its totient is φ = 6431040.

The previous prime is 23319823. The next prime is 23319833. The reversal of 23319828 is 82891332.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23319823) and next prime (23319833).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23319792 and 23319801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23319823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5713 + ... + 8903.

It is an arithmetic number, because the mean of its divisors is an integer number (968240).

Almost surely, 2^23319828 is an apocalyptic number.

23319828 is a gapful number since it is divisible by the number (28) 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 23319828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34856640).

23319828 is an abundant number, since it is smaller than the sum of its proper divisors (46393452).

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

23319828 is a wasteful number, since it uses less digits than its factorization.

23319828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237 (or 3232 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 23319828 is about 4829.0607782466. The cubic root of 23319828 is about 285.6988206391.

The spelling of 23319828 in words is "twenty-three million, three hundred nineteen thousand, eight hundred twenty-eight".