23112240 has 160 divisors (see below), whose sum is σ = 77137920. Its totient is φ = 5710848.

The previous prime is 23112239. The next prime is 23112269. The reversal of 23112240 is 4221132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292521 + ... + 292599.

It is an arithmetic number, because the mean of its divisors is an integer number (482112).

Almost surely, 2^23112240 is an apocalyptic number.

23112240 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 23112240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38568960).

23112240 is an abundant number, since it is smaller than the sum of its proper divisors (54025680).

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

23112240 is a wasteful number, since it uses less digits than its factorization.

23112240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 23112240 is about 4807.5191107264. The cubic root of 23112240 is about 284.8485498809.

Adding to 23112240 its reverse (4221132), we get a palindrome (27333372).

The spelling of 23112240 in words is "twenty-three million, one hundred twelve thousand, two hundred forty".