28903940208 has 840 divisors, whose sum is σ = 104765151744. Its totient is φ = 7642252800.

The previous prime is 28903940207. The next prime is 28903940249. The reversal of 28903940208 is 80204930982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28903940207) 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 167 ways as a sum of consecutive naturals, for example, 672184635 + ... + 672184677.

Almost surely, 2^28903940208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28903940208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52382575872).

28903940208 is an abundant number, since it is smaller than the sum of its proper divisors (75861211536).

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

28903940208 is a wasteful number, since it uses less digits than its factorization.

28903940208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 28903940208 in words is "twenty-eight billion, nine hundred three million, nine hundred forty thousand, two hundred eight".