23830640 has 40 divisors (see below), whose sum is σ = 56045520. Its totient is φ = 9422336.

The previous prime is 23830621. The next prime is 23830649. The reversal of 23830640 is 4603832.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23830649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5447 + ... + 8793.

It is an arithmetic number, because the mean of its divisors is an integer number (1401138).

Almost surely, 2^23830640 is an apocalyptic number.

23830640 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 23830640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28022760).

23830640 is an abundant number, since it is smaller than the sum of its proper divisors (32214880).

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

23830640 is a wasteful number, since it uses less digits than its factorization.

23830640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449 (or 3443 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 23830640 is about 4881.6636508469. The cubic root of 23830640 is about 287.7698134984.

The spelling of 23830640 in words is "twenty-three million, eight hundred thirty thousand, six hundred forty".