23212472140 has 192 divisors, whose sum is σ = 60850944000. Its totient is φ = 7311928320.

The previous prime is 23212472099. The next prime is 23212472141. The reversal of 23212472140 is 4127421232.

It is a junction number, because it is equal to n+sod(n) for n = 23212472099 and 23212472108.

It is not an unprimeable number, because it can be changed into a prime (23212472141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5921101 + ... + 5925019.

It is an arithmetic number, because the mean of its divisors is an integer number (316932000).

Almost surely, 2^23212472140 is an apocalyptic number.

23212472140 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 23212472140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30425472000).

23212472140 is an abundant number, since it is smaller than the sum of its proper divisors (37638471860).

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

23212472140 is a wasteful number, since it uses less digits than its factorization.

23212472140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080 (or 4078 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 23212472140 its reverse (4127421232), we get a palindrome (27339893372).

The spelling of 23212472140 in words is "twenty-three billion, two hundred twelve million, four hundred seventy-two thousand, one hundred forty".