23252440 has 16 divisors (see below), whose sum is σ = 52318080. Its totient is φ = 9300960.

The previous prime is 23252393. The next prime is 23252441. The reversal of 23252440 is 4425232.

It is a super-3 number, since 3×23252440³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23252441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290616 + ... + 290695.

It is an arithmetic number, because the mean of its divisors is an integer number (3269880).

Almost surely, 2^23252440 is an apocalyptic number.

23252440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23252440 is an abundant number, since it is smaller than the sum of its proper divisors (29065640).

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

23252440 is a wasteful number, since it uses less digits than its factorization.

23252440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581322 (or 581318 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 23252440 is about 4822.0783900721. The cubic root of 23252440 is about 285.4233576731.

Adding to 23252440 its reverse (4425232), we get a palindrome (27677672).

The spelling of 23252440 in words is "twenty-three million, two hundred fifty-two thousand, four hundred forty".