20006026400 has 36 divisors (see below), whose sum is σ = 48839713902. Its totient is φ = 8002410240.

The previous prime is 20006026399. The next prime is 20006026487. The reversal of 20006026400 is 462060002.

It can be written as a sum of positive squares in 3 ways, for example, as 12902233744 + 7103792656 = 113588^2 + 84284^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12502967 + ... + 12504566.

Almost surely, 2^20006026400 is an apocalyptic number.

20006026400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20006026400 is an abundant number, since it is smaller than the sum of its proper divisors (28833687502).

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

20006026400 is a wasteful number, since it uses less digits than its factorization.

20006026400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25007553 (or 25007540 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20006026400 its reverse (462060002), we get a palindrome (20468086402).

It can be divided in two parts, 2000602 and 6400, that added together give a palindrome (2007002).

The spelling of 20006026400 in words is "twenty billion, six million, twenty-six thousand, four hundred".