28326989376 has 252 divisors, whose sum is σ = 96056897040. Its totient is φ = 7955781120.

The previous prime is 28326989333. The next prime is 28326989387. The reversal of 28326989376 is 67398962382.

28326989376 is a `hidden beast` number, since 283 + 269 + 8 + 93 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (252).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1656711 + ... + 1673721.

Almost surely, 2^28326989376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28326989376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48028448520).

28326989376 is an abundant number, since it is smaller than the sum of its proper divisors (67729907664).

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

28326989376 is a wasteful number, since it uses less digits than its factorization.

28326989376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17102 (or 17082 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 63.

The spelling of 28326989376 in words is "twenty-eight billion, three hundred twenty-six million, nine hundred eighty-nine thousand, three hundred seventy-six".