20929000026 has 64 divisors (see below), whose sum is σ = 46643765760. Its totient is φ = 6206900160.

The previous prime is 20929000019. The next prime is 20929000093. The reversal of 20929000026 is 62000092902.

It is a junction number, because it is equal to n+sod(n) for n = 20928999957 and 20929000002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 872100 + ... + 895776.

It is an arithmetic number, because the mean of its divisors is an integer number (728808840).

Almost surely, 2^20929000026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20929000026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23321882880).

20929000026 is an abundant number, since it is smaller than the sum of its proper divisors (25714765734).

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

20929000026 is a wasteful number, since it uses less digits than its factorization.

20929000026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23979.

The product of its (nonzero) digits is 3888, while the sum is 30.

Adding to 20929000026 its reverse (62000092902), we get a palindrome (82929092928).

The spelling of 20929000026 in words is "twenty billion, nine hundred twenty-nine million, twenty-six", and thus it is an aban number.