20834040028 has 36 divisors (see below), whose sum is σ = 36880044040. Its totient is φ = 10298107584.

The previous prime is 20834040023. The next prime is 20834040041. The reversal of 20834040028 is 82004043802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20834040023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25131118 + ... + 25131946.

Almost surely, 2^20834040028 is an apocalyptic number.

It is an amenable number.

20834040028 is a deficient number, since it is larger than the sum of its proper divisors (16046004012).

20834040028 is a wasteful number, since it uses less digits than its factorization.

20834040028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414 (or 1263 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The spelling of 20834040028 in words is "twenty billion, eight hundred thirty-four million, forty thousand, twenty-eight".