23615940 has 96 divisors (see below), whose sum is σ = 70076160. Its totient is φ = 5930496.

The previous prime is 23615909. The next prime is 23615951. The reversal of 23615940 is 4951632.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23615898 and 23615907.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 150342 + ... + 150498.

It is an arithmetic number, because the mean of its divisors is an integer number (729960).

Almost surely, 2^23615940 is an apocalyptic number.

23615940 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 23615940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35038080).

23615940 is an abundant number, since it is smaller than the sum of its proper divisors (46460220).

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

23615940 is a wasteful number, since it uses less digits than its factorization.

23615940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 23615940 is about 4859.6234422021. The cubic root of 23615940 is about 286.9029930297.

The spelling of 23615940 in words is "twenty-three million, six hundred fifteen thousand, nine hundred forty".