20028820026 has 16 divisors (see below), whose sum is σ = 41799276864. Its totient is φ = 6386000544.

The previous prime is 20028819953. The next prime is 20028820061. The reversal of 20028820026 is 62002882002.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20028819975 and 20028820002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72568051 + ... + 72568326.

It is an arithmetic number, because the mean of its divisors is an integer number (2612454804).

Almost surely, 2^20028820026 is an apocalyptic number.

20028820026 is an abundant number, since it is smaller than the sum of its proper divisors (21770456838).

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

20028820026 is a wasteful number, since it uses less digits than its factorization.

20028820026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145136405.

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 20028820026 in words is "twenty billion, twenty-eight million, eight hundred twenty thousand, twenty-six".