28901969280 has 768 divisors, whose sum is σ = 113317626240. Its totient is φ = 6747586560.

The previous prime is 28901969279. The next prime is 28901969281. The reversal of 28901969280 is 8296910982.

It is an interprime number because it is at equal distance from previous prime (28901969279) and next prime (28901969281).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28901969281) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 92338404 + ... + 92338716.

Almost surely, 2^28901969280 is an apocalyptic number.

28901969280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28901969280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56658813120).

28901969280 is an abundant number, since it is smaller than the sum of its proper divisors (84415656960).

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

28901969280 is a wasteful number, since it uses less digits than its factorization.

28901969280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 28901969280 in words is "twenty-eight billion, nine hundred one million, nine hundred sixty-nine thousand, two hundred eighty".