28303885632 has 224 divisors, whose sum is σ = 82934616960. Its totient is φ = 8447918080.

The previous prime is 28303885573. The next prime is 28303885681. The reversal of 28303885632 is 23658830382.

It is a super-2 number, since 2×28303885632² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

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, 55606594 + ... + 55607102.

Almost surely, 2^28303885632 is an apocalyptic number.

28303885632 is a gapful number since it is divisible by the number (22) 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 28303885632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41467308480).

28303885632 is an abundant number, since it is smaller than the sum of its proper divisors (54630731328).

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

28303885632 is a wasteful number, since it uses less digits than its factorization.

28303885632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 28303885632 in words is "twenty-eight billion, three hundred three million, eight hundred eighty-five thousand, six hundred thirty-two".