23133510 has 48 divisors (see below), whose sum is σ = 61781616. Its totient is φ = 6001344.

The previous prime is 23133497. The next prime is 23133563. The reversal of 23133510 is 1533132.

23133510 is a `hidden beast` number, since 2 + 313 + 351 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144 + ... + 6803.

It is an arithmetic number, because the mean of its divisors is an integer number (1287117).

Almost surely, 2^23133510 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23133510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30890808).

23133510 is an abundant number, since it is smaller than the sum of its proper divisors (38648106).

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

23133510 is a wasteful number, since it uses less digits than its factorization.

23133510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997 (or 6994 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 23133510 is about 4809.7307616955. The cubic root of 23133510 is about 284.9359043304.

Adding to 23133510 its reverse (1533132), we get a palindrome (24666642).

The spelling of 23133510 in words is "twenty-three million, one hundred thirty-three thousand, five hundred ten".