28653993984 has 480 divisors, whose sum is σ = 97539757056. Its totient is φ = 7266631680.

The previous prime is 28653993959. The next prime is 28653993989. The reversal of 28653993984 is 48939935682.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28653993989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253575112 + ... + 253575224.

Almost surely, 2^28653993984 is an apocalyptic number.

28653993984 is a gapful number since it is divisible by the number (24) 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 28653993984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48769878528).

28653993984 is an abundant number, since it is smaller than the sum of its proper divisors (68885763072).

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

28653993984 is a wasteful number, since it uses less digits than its factorization.

28653993984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 203 counting only the distinct ones).

The product of its digits is 100776960, while the sum is 66.

The spelling of 28653993984 in words is "twenty-eight billion, six hundred fifty-three million, nine hundred ninety-three thousand, nine hundred eighty-four".