23408533 has 4 divisors (see below), whose sum is σ = 23513728. Its totient is φ = 23303340.

The previous prime is 23408519. The next prime is 23408537. The reversal of 23408533 is 33580432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23408533 - 2¹³ = 23400341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23408537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52263 + ... + 52708.

It is an arithmetic number, because the mean of its divisors is an integer number (5878432).

Almost surely, 2^23408533 is an apocalyptic number.

It is an amenable number.

23408533 is a deficient number, since it is larger than the sum of its proper divisors (105195).

23408533 is a wasteful number, since it uses less digits than its factorization.

23408533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105194.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 23408533 is about 4838.2365589128. The cubic root of 23408533 is about 286.0606135894.

Adding to 23408533 its reverse (33580432), we get a palindrome (56988965).

The spelling of 23408533 in words is "twenty-three million, four hundred eight thousand, five hundred thirty-three".