20123023200 has 144 divisors (see below), whose sum is σ = 74857708800. Its totient is φ = 4599544320.

The previous prime is 20123023181. The next prime is 20123023201. The reversal of 20123023200 is 232032102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20123023200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123023201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 582100 + ... + 615699.

It is an arithmetic number, because the mean of its divisors is an integer number (519845200).

Almost surely, 2^20123023200 is an apocalyptic number.

20123023200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123023200 is an abundant number, since it is smaller than the sum of its proper divisors (54734685600).

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

20123023200 is a wasteful number, since it uses less digits than its factorization.

20123023200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197829 (or 1197816 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20123023200 its reverse (232032102), we get a palindrome (20355055302).

The spelling of 20123023200 in words is "twenty billion, one hundred twenty-three million, twenty-three thousand, two hundred".