21340000032 has 96 divisors (see below), whose sum is σ = 60358011840. Its totient is φ = 6562728960.

The previous prime is 21340000027. The next prime is 21340000049. The reversal of 21340000032 is 23000004312.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 21339999966 and 21340000020.

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, 3477607 + ... + 3483737.

It is an arithmetic number, because the mean of its divisors is an integer number (628729290).

Almost surely, 2^21340000032 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 21340000032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30179005920).

21340000032 is an abundant number, since it is smaller than the sum of its proper divisors (39018011808).

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

21340000032 is a wasteful number, since it uses less digits than its factorization.

21340000032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8946 (or 8938 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 21340000032 its reverse (23000004312), we get a palindrome (44340004344).

The spelling of 21340000032 in words is "twenty-one billion, three hundred forty million, thirty-two", and thus it is an aban number.