23849904 has 80 divisors (see below), whose sum is σ = 68210912. Its totient is φ = 7133184.

The previous prime is 23849887. The next prime is 23849939. The reversal of 23849904 is 40994832.

23849904 = 132² + 133² + ... + 419².

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22572 + ... + 23604.

Almost surely, 2^23849904 is an apocalyptic number.

23849904 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 23849904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34105456).

23849904 is an abundant number, since it is smaller than the sum of its proper divisors (44361008).

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

23849904 is a wasteful number, since it uses less digits than its factorization.

23849904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 23849904 is about 4883.6363500982. The cubic root of 23849904 is about 287.8473342112.

It can be divided in two parts, 23849 and 904, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 23849904 in words is "twenty-three million, eight hundred forty-nine thousand, nine hundred four".