23903838 has 24 divisors (see below), whose sum is σ = 59190768. Its totient is φ = 6829632.

The previous prime is 23903833. The next prime is 23903851. The reversal of 23903838 is 83830932.

It is a super-2 number, since 2×23903838² = 1142786942260488, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23903833) 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, 94731 + ... + 94982.

It is an arithmetic number, because the mean of its divisors is an integer number (2466282).

Almost surely, 2^23903838 is an apocalyptic number.

23903838 is an abundant number, since it is smaller than the sum of its proper divisors (35286930).

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

23903838 is a wasteful number, since it uses less digits than its factorization.

23903838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189728 (or 189725 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 23903838 is about 4889.1551417397. The cubic root of 23903838 is about 288.0641494834.

It can be divided in two parts, 2390383 and 8, that added together give a triangular number (2390391 = T₂₁₈₆).

The spelling of 23903838 in words is "twenty-three million, nine hundred three thousand, eight hundred thirty-eight".