23244320 has 96 divisors (see below), whose sum is σ = 61399296. Its totient is φ = 8243200.

The previous prime is 23244317. The next prime is 23244323. The reversal of 23244320 is 2344232.

23244320 = 248² + 249² + ... + 439².

It is an interprime number because it is at equal distance from previous prime (23244317) and next prime (23244323).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23244292 and 23244301.

It is not an unprimeable number, because it can be changed into a prime (23244323) 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, 82580 + ... + 82860.

It is an arithmetic number, because the mean of its divisors is an integer number (639576).

Almost surely, 2^23244320 is an apocalyptic number.

23244320 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 23244320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30699648).

23244320 is an abundant number, since it is smaller than the sum of its proper divisors (38154976).

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

23244320 is a wasteful number, since it uses less digits than its factorization.

23244320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 23244320 is about 4821.2363559568. The cubic root of 23244320 is about 285.3901295116.

Adding to 23244320 its reverse (2344232), we get a palindrome (25588552).

The spelling of 23244320 in words is "twenty-three million, two hundred forty-four thousand, three hundred twenty".