20893896630 has 72 divisors (see below), whose sum is σ = 57333867552. Its totient is φ = 5278449888.

The previous prime is 20893896613. The next prime is 20893896643. The reversal of 20893896630 is 3669839802.

20893896630 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 289054 + ... + 354033.

It is an arithmetic number, because the mean of its divisors is an integer number (796303716).

Almost surely, 2^20893896630 is an apocalyptic number.

20893896630 is an abundant number, since it is smaller than the sum of its proper divisors (36439970922).

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

20893896630 is a wasteful number, since it uses less digits than its factorization.

20893896630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643138 (or 643116 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 20893896630 in words is "twenty billion, eight hundred ninety-three million, eight hundred ninety-six thousand, six hundred thirty".