23441440 has 96 divisors (see below), whose sum is σ = 63685440. Its totient is φ = 8064000.

The previous prime is 23441437. The next prime is 23441447. The reversal of 23441440 is 4414432.

It is a super-2 number, since 2×23441440² = 1099002218547200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (23441447) 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, 33090 + ... + 33790.

It is an arithmetic number, because the mean of its divisors is an integer number (663390).

Almost surely, 2^23441440 is an apocalyptic number.

23441440 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 23441440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31842720).

23441440 is an abundant number, since it is smaller than the sum of its proper divisors (40244000).

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

23441440 is a wasteful number, since it uses less digits than its factorization.

23441440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 23441440 is about 4841.6360871094. The cubic root of 23441440 is about 286.1945959145.

Adding to 23441440 its reverse (4414432), we get a palindrome (27855872).

The spelling of 23441440 in words is "twenty-three million, four hundred forty-one thousand, four hundred forty".