23004534 has 16 divisors (see below), whose sum is σ = 52581888. Its totient is φ = 6572712.

The previous prime is 23004523. The next prime is 23004539. The reversal of 23004534 is 43540032.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 23004534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23004539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273822 + ... + 273905.

It is an arithmetic number, because the mean of its divisors is an integer number (3286368).

Almost surely, 2^23004534 is an apocalyptic number.

23004534 is an abundant number, since it is smaller than the sum of its proper divisors (29577354).

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

23004534 is a wasteful number, since it uses less digits than its factorization.

23004534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547739.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 23004534 is about 4796.3042021957. The cubic root of 23004534 is about 284.4053838485.

Adding to 23004534 its reverse (43540032), we get a palindrome (66544566).

The spelling of 23004534 in words is "twenty-three million, four thousand, five hundred thirty-four".