23669856 has 144 divisors (see below), whose sum is σ = 78624000. Its totient is φ = 6614784.

The previous prime is 23669813. The next prime is 23669873. The reversal of 23669856 is 65896632.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (466560) is a multiple of the sum of its prime divisors (270).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118845 + ... + 119043.

It is an arithmetic number, because the mean of its divisors is an integer number (546000).

Almost surely, 2^23669856 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 23669856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39312000).

23669856 is an abundant number, since it is smaller than the sum of its proper divisors (54954144).

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

23669856 is a wasteful number, since it uses less digits than its factorization.

23669856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 270 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 23669856 is about 4865.1676230116. The cubic root of 23669856 is about 287.1211635373.

The spelling of 23669856 in words is "twenty-three million, six hundred sixty-nine thousand, eight hundred fifty-six".