20012951028 has 96 divisors (see below), whose sum is σ = 57323392000. Its totient is φ = 5417018208.

The previous prime is 20012950967. The next prime is 20012951039. The reversal of 20012951028 is 82015921002.

It is a junction number, because it is equal to n+sod(n) for n = 20012950986 and 20012951004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49750 + ... + 206157.

Almost surely, 2^20012951028 is an apocalyptic number.

20012951028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20012951028 is an abundant number, since it is smaller than the sum of its proper divisors (37310440972).

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

20012951028 is a wasteful number, since it uses less digits than its factorization.

20012951028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255954 (or 255938 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The spelling of 20012951028 in words is "twenty billion, twelve million, nine hundred fifty-one thousand, twenty-eight".