23403120500 has 24 divisors (see below), whose sum is σ = 51112416264. Its totient is φ = 9361248000.

The previous prime is 23403120473. The next prime is 23403120511. The reversal of 23403120500 is 502130432.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1794708496 + 21608412004 = 42364^2 + 146998^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23402621 + ... + 23403620.

It is an arithmetic number, because the mean of its divisors is an integer number (2129684011).

Almost surely, 2^23403120500 is an apocalyptic number.

23403120500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23403120500 is an abundant number, since it is smaller than the sum of its proper divisors (27709295764).

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

23403120500 is a wasteful number, since it uses less digits than its factorization.

23403120500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46806260 (or 46806248 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 23403120500 its reverse (502130432), we get a palindrome (23905250932).

The spelling of 23403120500 in words is "twenty-three billion, four hundred three million, one hundred twenty thousand, five hundred".