2026120644 has 72 divisors (see below), whose sum is σ = 5170867520. Its totient is φ = 668907072.

The previous prime is 2026120637. The next prime is 2026120687. The reversal of 2026120644 is 4460216202.

2026120644 is a `hidden beast` number, since 2 + 0 + 2 + 6 + 12 + 0 + 644 = 666.

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 23 ways as a sum of consecutive naturals, for example, 2857362 + ... + 2858070.

Almost surely, 2^2026120644 is an apocalyptic number.

It is an amenable number.

2026120644 is an abundant number, since it is smaller than the sum of its proper divisors (3144746876).

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

2026120644 is a wasteful number, since it uses less digits than its factorization.

2026120644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 2026120644 is about 45012.4498777838. The cubic root of 2026120644 is about 1265.3823346075.

Adding to 2026120644 its reverse (4460216202), we get a palindrome (6486336846).

The spelling of 2026120644 in words is "two billion, twenty-six million, one hundred twenty thousand, six hundred forty-four".