23405460 has 96 divisors (see below), whose sum is σ = 72573312. Its totient is φ = 5598720.

The previous prime is 23405443. The next prime is 23405471. The reversal of 23405460 is 6450432.

It is a self number, because there is not a number n which added to its sum of digits gives 23405460.

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 31 ways as a sum of consecutive naturals, for example, 28455 + ... + 29265.

It is an arithmetic number, because the mean of its divisors is an integer number (755972).

Almost surely, 2^23405460 is an apocalyptic number.

23405460 is a gapful number since it is divisible by the number (20) 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 23405460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36286656).

23405460 is an abundant number, since it is smaller than the sum of its proper divisors (49167852).

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

23405460 is a wasteful number, since it uses less digits than its factorization.

23405460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 23405460 is about 4837.9189741045. The cubic root of 23405460 is about 286.0480953233.

Adding to 23405460 its reverse (6450432), we get a palindrome (29855892).

The spelling of 23405460 in words is "twenty-three million, four hundred five thousand, four hundred sixty".