23020004 has 36 divisors (see below), whose sum is σ = 47147436. Its totient is φ = 9805824.

The previous prime is 23019979. The next prime is 23020009. The reversal of 23020004 is 40002032.

It can be written as a sum of positive squares in 2 ways, for example, as 21603904 + 1416100 = 4648^2 + 1190^2 .

It is not an unprimeable number, because it can be changed into a prime (23020009) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 50144 + ... + 50600.

It is an arithmetic number, because the mean of its divisors is an integer number (1309651).

Almost surely, 2^23020004 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 23020004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23573718).

23020004 is an abundant number, since it is smaller than the sum of its proper divisors (24127432).

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

23020004 is a wasteful number, since it uses less digits than its factorization.

23020004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 723 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 23020004 is about 4797.9166312057. The cubic root of 23020004 is about 284.4691215073.

Adding to 23020004 its reverse (40002032), we get a palindrome (63022036).

The spelling of 23020004 in words is "twenty-three million, twenty thousand, four".