28945987094976 has 56 divisors (see below), whose sum is σ = 87527151457920. Its totient is φ = 8270282026752.

The previous prime is 28945987094939. The next prime is 28945987094987. The reversal of 28945987094976 is 67949078954982.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 28945987094892 and 28945987094901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10768595046 + ... + 10768597733.

Almost surely, 2^{28945987094976} is an apocalyptic number.

It is an amenable number.

28945987094976 is an abundant number, since it is smaller than the sum of its proper divisors (58581164362944).

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

28945987094976 is a wasteful number, since it uses less digits than its factorization.

28945987094976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21537192801 (or 21537192791 counting only the distinct ones).

The product of its (nonzero) digits is 19752284160, while the sum is 87.

The spelling of 28945987094976 in words is "twenty-eight trillion, nine hundred forty-five billion, nine hundred eighty-seven million, ninety-four thousand, nine hundred seventy-six".