23230540 has 48 divisors (see below), whose sum is σ = 51901920. Its totient is φ = 8709120.

The previous prime is 23230523. The next prime is 23230541. The reversal of 23230540 is 4503232.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (23230541) by changing a digit.

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, 42670 + ... + 43210.

It is an arithmetic number, because the mean of its divisors is an integer number (1081290).

Almost surely, 2^23230540 is an apocalyptic number.

23230540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23230540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25950960).

23230540 is an abundant number, since it is smaller than the sum of its proper divisors (28671380).

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

23230540 is a wasteful number, since it uses less digits than its factorization.

23230540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 23230540 is about 4819.8070500799. The cubic root of 23230540 is about 285.3337221343. Note that the first 3 decimals are identical.

Adding to 23230540 its reverse (4503232), we get a palindrome (27733772).

The spelling of 23230540 in words is "twenty-three million, two hundred thirty thousand, five hundred forty".