23963904 has 72 divisors (see below), whose sum is σ = 70885920. Its totient is φ = 7985664.

The previous prime is 23963893. The next prime is 23963909. The reversal of 23963904 is 40936932.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (23963909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5179 + ... + 8645.

Almost surely, 2^23963904 is an apocalyptic number.

23963904 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 23963904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35442960).

23963904 is an abundant number, since it is smaller than the sum of its proper divisors (46922016).

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

23963904 is an equidigital number, since it uses as much as digits as its factorization.

23963904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492 (or 3472 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 23963904 is about 4895.2940667543. The cubic root of 23963904 is about 288.3052319463.

The spelling of 23963904 in words is "twenty-three million, nine hundred sixty-three thousand, nine hundred four".