23120812 has 48 divisors (see below), whose sum is σ = 48206592. Its totient is φ = 9564480.

The previous prime is 23120809. The next prime is 23120837. The reversal of 23120812 is 21802132.

It is a self number, because there is not a number n which added to its sum of digits gives 23120812.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47233 + ... + 47719.

It is an arithmetic number, because the mean of its divisors is an integer number (1004304).

Almost surely, 2^23120812 is an apocalyptic number.

23120812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23120812 is an abundant number, since it is smaller than the sum of its proper divisors (25085780).

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

23120812 is a wasteful number, since it uses less digits than its factorization.

23120812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 23120812 is about 4808.4105481957. The cubic root of 23120812 is about 284.8837609489.

Adding to 23120812 its reverse (21802132), we get a palindrome (44922944).

It can be divided in two parts, 23120 and 812, that added together give a palindrome (23932).

The spelling of 23120812 in words is "twenty-three million, one hundred twenty thousand, eight hundred twelve".