23881240 has 16 divisors (see below), whose sum is σ = 53732880. Its totient is φ = 9552480.

The previous prime is 23881237. The next prime is 23881259. The reversal of 23881240 is 4218832.

It is a junction number, because it is equal to n+sod(n) for n = 23881199 and 23881208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298476 + ... + 298555.

It is an arithmetic number, because the mean of its divisors is an integer number (3358305).

Almost surely, 2^23881240 is an apocalyptic number.

23881240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23881240 is an abundant number, since it is smaller than the sum of its proper divisors (29851640).

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

23881240 is a wasteful number, since it uses less digits than its factorization.

23881240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597042 (or 597038 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 23881240 is about 4886.8435620552. The cubic root of 23881240 is about 287.9733450125.

The spelling of 23881240 in words is "twenty-three million, eight hundred eighty-one thousand, two hundred forty".