20112429930 has 128 divisors (see below), whose sum is σ = 50100830208. Its totient is φ = 5164653312.

The previous prime is 20112429929. The next prime is 20112430007. The reversal of 20112429930 is 3992421102.

It is a junction number, because it is equal to n+sod(n) for n = 20112429891 and 20112429900.

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 63 ways as a sum of consecutive naturals, for example, 20798307 + ... + 20799273.

It is an arithmetic number, because the mean of its divisors is an integer number (391412736).

Almost surely, 2^20112429930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20112429930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25050415104).

20112429930 is an abundant number, since it is smaller than the sum of its proper divisors (29988400278).

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

20112429930 is a wasteful number, since it uses less digits than its factorization.

20112429930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 20112429930 in words is "twenty billion, one hundred twelve million, four hundred twenty-nine thousand, nine hundred thirty".