23684940 has 96 divisors (see below), whose sum is σ = 76930560. Its totient is φ = 6038208.

The previous prime is 23684929. The next prime is 23684977. The reversal of 23684940 is 4948632.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23684895 and 23684904.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 11467 + ... + 13373.

It is an arithmetic number, because the mean of its divisors is an integer number (801360).

Almost surely, 2^23684940 is an apocalyptic number.

23684940 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 23684940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38465280).

23684940 is an abundant number, since it is smaller than the sum of its proper divisors (53245620).

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

23684940 is a wasteful number, since it uses less digits than its factorization.

23684940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 23684940 is about 4866.7175796424. The cubic root of 23684940 is about 287.1821414603.

The spelling of 23684940 in words is "twenty-three million, six hundred eighty-four thousand, nine hundred forty".