20288784256 has 64 divisors (see below), whose sum is σ = 44540662320. Its totient is φ = 9146253312.

The previous prime is 20288784253. The next prime is 20288784259. The reversal of 20288784256 is 65248788202.

It is an interprime number because it is at equal distance from previous prime (20288784253) and next prime (20288784259).

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20288784253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70225 + ... + 213328.

Almost surely, 2^20288784256 is an apocalyptic number.

20288784256 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20288784256 is an abundant number, since it is smaller than the sum of its proper divisors (24251878064).

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

20288784256 is a wasteful number, since it uses less digits than its factorization.

20288784256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283623 (or 283611 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 52.

The spelling of 20288784256 in words is "twenty billion, two hundred eighty-eight million, seven hundred eighty-four thousand, two hundred fifty-six".