28281732668070 has 128 divisors (see below), whose sum is σ = 78989584859136. Its totient is φ = 6347376193536.

The previous prime is 28281732668011. The next prime is 28281732668117. The reversal of 28281732668070 is 7086623718282.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28281732667995 and 28281732668013.

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, 2879157 + ... + 8053136.

It is an arithmetic number, because the mean of its divisors is an integer number (617106131712).

Almost surely, 2^{28281732668070} is an apocalyptic number.

28281732668070 is an abundant number, since it is smaller than the sum of its proper divisors (50707852191066).

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

28281732668070 is a wasteful number, since it uses less digits than its factorization.

28281732668070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10932534.

The product of its (nonzero) digits is 21676032, while the sum is 60.

The spelling of 28281732668070 in words is "twenty-eight trillion, two hundred eighty-one billion, seven hundred thirty-two million, six hundred sixty-eight thousand, seventy".