28482219978 has 16 divisors (see below), whose sum is σ = 57528445536. Its totient is φ = 9400072400.

The previous prime is 28482219977. The next prime is 28482220001. The reversal of 28482219978 is 87991228482.

It is a super-2 number, since 2×28482219978² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28482219977) 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, 23499576 + ... + 23500787.

It is an arithmetic number, because the mean of its divisors is an integer number (3595527846).

Almost surely, 2^28482219978 is an apocalyptic number.

28482219978 is an abundant number, since it is smaller than the sum of its proper divisors (29046225558).

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

28482219978 is a wasteful number, since it uses less digits than its factorization.

28482219978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47000469.

The product of its digits is 9289728, while the sum is 60.

The spelling of 28482219978 in words is "twenty-eight billion, four hundred eighty-two million, two hundred nineteen thousand, nine hundred seventy-eight".