20948819628 has 48 divisors (see below), whose sum is σ = 53999285760. Its totient is φ = 6267768000.

The previous prime is 20948819609. The next prime is 20948819629. The reversal of 20948819628 is 82691884902.

It is not an unprimeable number, because it can be changed into a prime (20948819629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 994023 + ... + 1014878.

It is an arithmetic number, because the mean of its divisors is an integer number (1124985120).

Almost surely, 2^20948819628 is an apocalyptic number.

It is an amenable number.

20948819628 is an abundant number, since it is smaller than the sum of its proper divisors (33050466132).

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

20948819628 is a wasteful number, since it uses less digits than its factorization.

20948819628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008998 (or 2008996 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 57.

The spelling of 20948819628 in words is "twenty billion, nine hundred forty-eight million, eight hundred nineteen thousand, six hundred twenty-eight".