23819838 has 32 divisors (see below), whose sum is σ = 55109376. Its totient is φ = 6722688.

The previous prime is 23819833. The next prime is 23819857. The reversal of 23819838 is 83891832.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 23819838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23819833) 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, 70 + ... + 6902.

It is an arithmetic number, because the mean of its divisors is an integer number (1722168).

Almost surely, 2^23819838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23819838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27554688).

23819838 is an abundant number, since it is smaller than the sum of its proper divisors (31289538).

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

23819838 is a wasteful number, since it uses less digits than its factorization.

23819838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6928.

The product of its digits is 82944, while the sum is 42.

The square root of 23819838 is about 4880.5571403273. The cubic root of 23819838 is about 287.7263266356.

The spelling of 23819838 in words is "twenty-three million, eight hundred nineteen thousand, eight hundred thirty-eight".