28873967896438 has 32 divisors (see below), whose sum is σ = 49546308096000. Its totient is φ = 12362539880544.

The previous prime is 28873967896429. The next prime is 28873967896439. The reversal of 28873967896438 is 83469876937882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28873967896439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255920763 + ... + 256033561.

It is an arithmetic number, because the mean of its divisors is an integer number (1548322128000).

Almost surely, 2^{28873967896438} is an apocalyptic number.

28873967896438 is a deficient number, since it is larger than the sum of its proper divisors (20672340199562).

28873967896438 is a wasteful number, since it uses less digits than its factorization.

28873967896438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130404.

The product of its digits is 42138206208, while the sum is 88.

The spelling of 28873967896438 in words is "twenty-eight trillion, eight hundred seventy-three billion, nine hundred sixty-seven million, eight hundred ninety-six thousand, four hundred thirty-eight".