23420203400 has 288 divisors, whose sum is σ = 62339760000. Its totient is φ = 8170483200.

The previous prime is 23420203271. The next prime is 23420203451. The reversal of 23420203400 is 430202432.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 67106426 + ... + 67106774.

It is an arithmetic number, because the mean of its divisors is an integer number (216457500).

Almost surely, 2^23420203400 is an apocalyptic number.

23420203400 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 23420203400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31169880000).

23420203400 is an abundant number, since it is smaller than the sum of its proper divisors (38919556600).

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

23420203400 is a wasteful number, since it uses less digits than its factorization.

23420203400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 23420203400 its reverse (430202432), we get a palindrome (23850405832).

The spelling of 23420203400 in words is "twenty-three billion, four hundred twenty million, two hundred three thousand, four hundred".