28257098643356 has 96 divisors (see below), whose sum is σ = 56514246082560. Its totient is φ = 12245105880000.

The previous prime is 28257098643341. The next prime is 28257098643373. The reversal of 28257098643356 is 65334689075282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123749411 + ... + 123977541.

It is an arithmetic number, because the mean of its divisors is an integer number (588690063360).

Almost surely, 2^{28257098643356} is an apocalyptic number.

It is an amenable number.

28257098643356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

28257098643356 is a wasteful number, since it uses less digits than its factorization.

28257098643356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229527 (or 229525 counting only the distinct ones).

The product of its (nonzero) digits is 522547200, while the sum is 68.

The spelling of 28257098643356 in words is "twenty-eight trillion, two hundred fifty-seven billion, ninety-eight million, six hundred forty-three thousand, three hundred fifty-six".