23332240 has 80 divisors (see below), whose sum is σ = 57250800. Its totient is φ = 8830976.

The previous prime is 23332219. The next prime is 23332249. The reversal of 23332240 is 4223332.

23332240 = T₈₅ + T₈₆ + ... + T₅₁₉.

It can be written as a sum of positive squares in 8 ways, for example, as 6390784 + 16941456 = 2528^2 + 4116^2 .

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

It is not an unprimeable number, because it can be changed into a prime (23332249) 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, 206424 + ... + 206536.

It is an arithmetic number, because the mean of its divisors is an integer number (715635).

Almost surely, 2^23332240 is an apocalyptic number.

23332240 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 23332240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28625400).

23332240 is an abundant number, since it is smaller than the sum of its proper divisors (33918560).

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

23332240 is a wasteful number, since it uses less digits than its factorization.

23332240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 23332240 is about 4830.3457433190. The cubic root of 23332240 is about 285.7494994693.

Adding to 23332240 its reverse (4223332), we get a palindrome (27555572).

The spelling of 23332240 in words is "twenty-three million, three hundred thirty-two thousand, two hundred forty".