23990841 has 18 divisors (see below), whose sum is σ = 40311882. Its totient is φ = 13708800.

The previous prime is 23990839. The next prime is 23990867. The reversal of 23990841 is 14809932.

It can be written as a sum of positive squares in only one way, i.e., 22127616 + 1863225 = 4704^2 + 1365^2 .

It is not a de Polignac number, because 23990841 - 2¹ = 23990839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23990796 and 23990805.

It is not an unprimeable number, because it can be changed into a prime (23970841) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26760 + ... + 27641.

It is an arithmetic number, because the mean of its divisors is an integer number (2239549).

Almost surely, 2^23990841 is an apocalyptic number.

23990841 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23990841 is a deficient number, since it is larger than the sum of its proper divisors (16321041).

23990841 is a wasteful number, since it uses less digits than its factorization.

23990841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54421 (or 54411 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 23990841 is about 4898.0446098418. The cubic root of 23990841 is about 288.4132161600.

The spelling of 23990841 in words is "twenty-three million, nine hundred ninety thousand, eight hundred forty-one".