23720838 has 8 divisors (see below), whose sum is σ = 47441688. Its totient is φ = 7906944.

The previous prime is 23720813. The next prime is 23720849. The reversal of 23720838 is 83802732.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

23720838 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 23720799 and 23720808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1976731 + ... + 1976742.

It is an arithmetic number, because the mean of its divisors is an integer number (5930211).

Almost surely, 2^23720838 is an apocalyptic number.

23720838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

23720838 is a wasteful number, since it uses less digits than its factorization.

23720838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953478.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 23720838 is about 4870.4042953332. The cubic root of 23720838 is about 287.3271571045.

The spelling of 23720838 in words is "twenty-three million, seven hundred twenty thousand, eight hundred thirty-eight".