28310975424 has 168 divisors, whose sum is σ = 82693914368. Its totient is φ = 9258416640.

The previous prime is 28310975369. The next prime is 28310975437. The reversal of 28310975424 is 42457901382.

28310975424 is a `hidden beast` number, since 2 + 8 + 3 + 10 + 97 + 542 + 4 = 666.

It is a super-2 number, since 2×28310975424² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28310975424.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10457079 + ... + 10459785.

Almost surely, 2^28310975424 is an apocalyptic number.

28310975424 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 28310975424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41346957184).

28310975424 is an abundant number, since it is smaller than the sum of its proper divisors (54382938944).

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

28310975424 is a wasteful number, since it uses less digits than its factorization.

28310975424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063 (or 3050 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 28310975424 in words is "twenty-eight billion, three hundred ten million, nine hundred seventy-five thousand, four hundred twenty-four".