20448958328 has 16 divisors (see below), whose sum is σ = 38714048880. Its totient is φ = 10125211968.

The previous prime is 20448958307. The next prime is 20448958333. The reversal of 20448958328 is 82385984402.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20448958328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12407525 + ... + 12409172.

It is an arithmetic number, because the mean of its divisors is an integer number (2419628055).

Almost surely, 2^20448958328 is an apocalyptic number.

It is an amenable number.

20448958328 is a deficient number, since it is larger than the sum of its proper divisors (18265090552).

20448958328 is a wasteful number, since it uses less digits than its factorization.

20448958328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24816806 (or 24816802 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 53.

The spelling of 20448958328 in words is "twenty billion, four hundred forty-eight million, nine hundred fifty-eight thousand, three hundred twenty-eight".