21828481032 has 64 divisors (see below), whose sum is σ = 57847374720. Its totient is φ = 6840316928.

The previous prime is 21828481007. The next prime is 21828481063. The reversal of 21828481032 is 23018482812.

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, 331738 + ... + 392054.

It is an arithmetic number, because the mean of its divisors is an integer number (903865230).

Almost surely, 2^21828481032 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 21828481032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28923687360).

21828481032 is an abundant number, since it is smaller than the sum of its proper divisors (36018893688).

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

21828481032 is a wasteful number, since it uses less digits than its factorization.

21828481032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61230 (or 61226 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The spelling of 21828481032 in words is "twenty-one billion, eight hundred twenty-eight million, four hundred eighty-one thousand, thirty-two".