28240236232 has 64 divisors (see below), whose sum is σ = 57996086400. Its totient is φ = 12813465600.

The previous prime is 28240236217. The next prime is 28240236251. The reversal of 28240236232 is 23263204282.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1514019 + ... + 1532557.

It is an arithmetic number, because the mean of its divisors is an integer number (906188850).

Almost surely, 2^28240236232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28240236232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28998043200).

28240236232 is an abundant number, since it is smaller than the sum of its proper divisors (29755850168).

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

28240236232 is a wasteful number, since it uses less digits than its factorization.

28240236232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18806 (or 18802 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

The spelling of 28240236232 in words is "twenty-eight billion, two hundred forty million, two hundred thirty-six thousand, two hundred thirty-two".