23921424 has 60 divisors (see below), whose sum is σ = 67297776. Its totient is φ = 7932096.

The previous prime is 23921423. The next prime is 23921453. The reversal of 23921424 is 42412932.

23921424 is a `hidden beast` number, since 239 + 2 + 1 + 424 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (23921423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40459 + ... + 41045.

Almost surely, 2^23921424 is an apocalyptic number.

23921424 is a gapful number since it is divisible by the number (24) 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 23921424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33648888).

23921424 is an abundant number, since it is smaller than the sum of its proper divisors (43376352).

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

23921424 is a wasteful number, since it uses less digits than its factorization.

23921424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 875 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 23921424 is about 4890.9532813144. The cubic root of 23921424 is about 288.1347748827.

The spelling of 23921424 in words is "twenty-three million, nine hundred twenty-one thousand, four hundred twenty-four".