28006938036 has 432 divisors, whose sum is σ = 94381822080. Its totient is φ = 6914880000.

The previous prime is 28006938019. The next prime is 28006938041. The reversal of 28006938036 is 63083960082.

It is a junction number, because it is equal to n+sod(n) for n = 28006937982 and 28006938000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 39952486 + ... + 39953186.

It is an arithmetic number, because the mean of its divisors is an integer number (218476440).

Almost surely, 2^28006938036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28006938036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47190911040).

28006938036 is an abundant number, since it is smaller than the sum of its proper divisors (66374884044).

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

28006938036 is a wasteful number, since it uses less digits than its factorization.

28006938036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 28006938036 in words is "twenty-eight billion, six million, nine hundred thirty-eight thousand, thirty-six".