28756696759420 has 192 divisors, whose sum is σ = 71344936857600. Its totient is φ = 9532315054080.

The previous prime is 28756696759403. The next prime is 28756696759433. The reversal of 28756696759420 is 2495769665782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1121586961 + ... + 1121612599.

It is an arithmetic number, because the mean of its divisors is an integer number (371588212800).

Almost surely, 2^{28756696759420} is an apocalyptic number.

28756696759420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28756696759420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35672468428800).

28756696759420 is an abundant number, since it is smaller than the sum of its proper divisors (42588240098180).

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

28756696759420 is a wasteful number, since it uses less digits than its factorization.

28756696759420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27908 (or 27906 counting only the distinct ones).

The product of its (nonzero) digits is 2743372800, while the sum is 76.

The spelling of 28756696759420 in words is "twenty-eight trillion, seven hundred fifty-six billion, six hundred ninety-six million, seven hundred fifty-nine thousand, four hundred twenty".