23409064 has 64 divisors (see below), whose sum is σ = 54000000. Its totient is φ = 9483264.

The previous prime is 23409059. The next prime is 23409091. The reversal of 23409064 is 46090432.

It is a Harshad number since it is a multiple of its sum of digits (28).

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 15 ways as a sum of consecutive naturals, for example, 51912 + ... + 52360.

It is an arithmetic number, because the mean of its divisors is an integer number (843750).

Almost surely, 2^23409064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23409064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27000000).

23409064 is an abundant number, since it is smaller than the sum of its proper divisors (30590936).

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

23409064 is a wasteful number, since it uses less digits than its factorization.

23409064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 23409064 is about 4838.2914339672. The cubic root of 23409064 is about 286.0627765761.

Adding to 23409064 its reverse (46090432), we get a palindrome (69499496).

The spelling of 23409064 in words is "twenty-three million, four hundred nine thousand, sixty-four".