23855120 has 40 divisors (see below), whose sum is σ = 57258240. Its totient is φ = 9233280.

The previous prime is 23855119. The next prime is 23855129. The reversal of 23855120 is 2155832.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 23855120.

It is not an unprimeable number, because it can be changed into a prime (23855129) 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, 2330 + ... + 7289.

It is an arithmetic number, because the mean of its divisors is an integer number (1431456).

Almost surely, 2^23855120 is an apocalyptic number.

23855120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23855120 is an abundant number, since it is smaller than the sum of its proper divisors (33403120).

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

23855120 is a wasteful number, since it uses less digits than its factorization.

23855120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9663 (or 9657 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 23855120 is about 4884.1703491995. The cubic root of 23855120 is about 287.8683168569.

The spelling of 23855120 in words is "twenty-three million, eight hundred fifty-five thousand, one hundred twenty".