28887939418 has 64 divisors (see below), whose sum is σ = 53336828160. Its totient is φ = 11589000192.

The previous prime is 28887939413. The next prime is 28887939419. The reversal of 28887939418 is 81493978882.

It is not an unprimeable number, because it can be changed into a prime (28887939413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245821 + ... + 343807.

It is an arithmetic number, because the mean of its divisors is an integer number (833387940).

Almost surely, 2^28887939418 is an apocalyptic number.

28887939418 is a deficient number, since it is larger than the sum of its proper divisors (24448888742).

28887939418 is a wasteful number, since it uses less digits than its factorization.

28887939418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98071.

The product of its digits is 55738368, while the sum is 67.

The spelling of 28887939418 in words is "twenty-eight billion, eight hundred eighty-seven million, nine hundred thirty-nine thousand, four hundred eighteen".