23617040 has 80 divisors (see below), whose sum is σ = 57853440. Its totient is φ = 8954880.

The previous prime is 23617037. The next prime is 23617043. The reversal of 23617040 is 4071632.

It is an interprime number because it is at equal distance from previous prime (23617037) and next prime (23617043).

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

It is a junction number, because it is equal to n+sod(n) for n = 23616997 and 23617015.

It is not an unprimeable number, because it can be changed into a prime (23617043) 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, 220667 + ... + 220773.

It is an arithmetic number, because the mean of its divisors is an integer number (723168).

Almost surely, 2^23617040 is an apocalyptic number.

23617040 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 23617040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28926720).

23617040 is an abundant number, since it is smaller than the sum of its proper divisors (34236400).

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

23617040 is a wasteful number, since it uses less digits than its factorization.

23617040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 23617040 is about 4859.7366183776. The cubic root of 23617040 is about 286.9074474843.

Adding to 23617040 its reverse (4071632), we get a palindrome (27688672).

The spelling of 23617040 in words is "twenty-three million, six hundred seventeen thousand, forty".