28905267408 has 20 divisors (see below), whose sum is σ = 74671940928. Its totient is φ = 9635089120.

The previous prime is 28905267407. The next prime is 28905267481. The reversal of 28905267408 is 80476250982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28905267407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301096488 + ... + 301096583.

Almost surely, 2^28905267408 is an apocalyptic number.

It is an amenable number.

28905267408 is an abundant number, since it is smaller than the sum of its proper divisors (45766673520).

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

28905267408 is a wasteful number, since it uses less digits than its factorization.

28905267408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602193082 (or 602193076 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 28905267408 in words is "twenty-eight billion, nine hundred five million, two hundred sixty-seven thousand, four hundred eight".