22478831232 has 256 divisors, whose sum is σ = 70638704640. Its totient is φ = 6243840000.

The previous prime is 22478831189. The next prime is 22478831237. The reversal of 22478831232 is 23213887422.

It is not an unprimeable number, because it can be changed into a prime (22478831237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8290357 + ... + 8293067.

It is an arithmetic number, because the mean of its divisors is an integer number (275932440).

Almost surely, 2^22478831232 is an apocalyptic number.

22478831232 is a gapful number since it is divisible by the number (22) 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 22478831232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35319352320).

22478831232 is an abundant number, since it is smaller than the sum of its proper divisors (48159873408).

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

22478831232 is a wasteful number, since it uses less digits than its factorization.

22478831232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903 (or 2891 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The spelling of 22478831232 in words is "twenty-two billion, four hundred seventy-eight million, eight hundred thirty-one thousand, two hundred thirty-two".