20890029120 has 224 divisors, whose sum is σ = 67056536448. Its totient is φ = 5509742592.

The previous prime is 20890029113. The next prime is 20890029137. The reversal of 20890029120 is 2192009802.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56005254 + ... + 56005626.

Almost surely, 2^20890029120 is an apocalyptic number.

20890029120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20890029120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33528268224).

20890029120 is an abundant number, since it is smaller than the sum of its proper divisors (46166507328).

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

20890029120 is a wasteful number, since it uses less digits than its factorization.

20890029120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The spelling of 20890029120 in words is "twenty billion, eight hundred ninety million, twenty-nine thousand, one hundred twenty".