23781996 has 72 divisors (see below), whose sum is σ = 72334080. Its totient is φ = 6435936.

The previous prime is 23781973. The next prime is 23782027. The reversal of 23781996 is 69918732.

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 23 ways as a sum of consecutive naturals, for example, 2305 + ... + 7271.

It is an arithmetic number, because the mean of its divisors is an integer number (1004640).

Almost surely, 2^23781996 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 23781996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36167040).

23781996 is an abundant number, since it is smaller than the sum of its proper divisors (48552084).

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

23781996 is a wasteful number, since it uses less digits than its factorization.

23781996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003 (or 4998 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 23781996 is about 4876.6787878637. The cubic root of 23781996 is about 287.5738779266.

The spelling of 23781996 in words is "twenty-three million, seven hundred eighty-one thousand, nine hundred ninety-six".