28394001693896 has 32 divisors (see below), whose sum is σ = 56107587816000. Its totient is φ = 13433759476416.

The previous prime is 28394001693887. The next prime is 28394001693907. The reversal of 28394001693896 is 69839610049382.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111197051 + ... + 111452106.

It is an arithmetic number, because the mean of its divisors is an integer number (1753362119250).

Almost surely, 2^{28394001693896} is an apocalyptic number.

It is an amenable number.

28394001693896 is a deficient number, since it is larger than the sum of its proper divisors (27713586122104).

28394001693896 is a wasteful number, since it uses less digits than its factorization.

28394001693896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222650021 (or 222650017 counting only the distinct ones).

The product of its (nonzero) digits is 120932352, while the sum is 68.

The spelling of 28394001693896 in words is "twenty-eight trillion, three hundred ninety-four billion, one million, six hundred ninety-three thousand, eight hundred ninety-six".