20346828420 has 48 divisors (see below), whose sum is σ = 60322364928. Its totient is φ = 5106654720.

The previous prime is 20346828407. The next prime is 20346828443. The reversal of 20346828420 is 2482864302.

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, 9972916 + ... + 9974955.

It is an arithmetic number, because the mean of its divisors is an integer number (1256715936).

Almost surely, 2^20346828420 is an apocalyptic number.

20346828420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20346828420 is an abundant number, since it is smaller than the sum of its proper divisors (39975536508).

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

20346828420 is a wasteful number, since it uses less digits than its factorization.

20346828420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19947900 (or 19947898 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 39.

The spelling of 20346828420 in words is "twenty billion, three hundred forty-six million, eight hundred twenty-eight thousand, four hundred twenty".