23849856 has 128 divisors (see below), whose sum is σ = 72134400. Its totient is φ = 7755264.

The previous prime is 23849849. The next prime is 23849879. The reversal of 23849856 is 65894832.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 231501 + ... + 231603.

It is an arithmetic number, because the mean of its divisors is an integer number (563550).

Almost surely, 2^23849856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23849856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36067200).

23849856 is an abundant number, since it is smaller than the sum of its proper divisors (48284544).

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

23849856 is a wasteful number, since it uses less digits than its factorization.

23849856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 175 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 23849856 is about 4883.6314357249. The cubic root of 23849856 is about 287.8471411052.

The spelling of 23849856 in words is "twenty-three million, eight hundred forty-nine thousand, eight hundred fifty-six".