28380916480 has 72 divisors (see below), whose sum is σ = 77692783392. Its totient is φ = 9730596864.

The previous prime is 28380916471. The next prime is 28380916481. The reversal of 28380916480 is 8461908382.

It is not an unprimeable number, because it can be changed into a prime (28380916481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1574797 + ... + 1592716.

It is an arithmetic number, because the mean of its divisors is an integer number (1079066436).

Almost surely, 2^28380916480 is an apocalyptic number.

28380916480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28380916480 is an abundant number, since it is smaller than the sum of its proper divisors (49311866912).

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

28380916480 is an equidigital number, since it uses as much as digits as its factorization.

28380916480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167541 (or 3167527 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 28380916480 in words is "twenty-eight billion, three hundred eighty million, nine hundred sixteen thousand, four hundred eighty".