28467922980 has 192 divisors, whose sum is σ = 93119040000. Its totient is φ = 6495584256.

The previous prime is 28467922979. The next prime is 28467922981. The reversal of 28467922980 is 8922976482.

It is an interprime number because it is at equal distance from previous prime (28467922979) and next prime (28467922981).

It is a self number, because there is not a number n which added to its sum of digits gives 28467922980.

It is not an unprimeable number, because it can be changed into a prime (28467922981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19118076 + ... + 19119564.

It is an arithmetic number, because the mean of its divisors is an integer number (484995000).

Almost surely, 2^28467922980 is an apocalyptic number.

28467922980 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 28467922980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46559520000).

28467922980 is an abundant number, since it is smaller than the sum of its proper divisors (64651117020).

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

28467922980 is a wasteful number, since it uses less digits than its factorization.

28467922980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451 (or 2435 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 28467922980 in words is "twenty-eight billion, four hundred sixty-seven million, nine hundred twenty-two thousand, nine hundred eighty".