28312384320 has 672 divisors, whose sum is σ = 111013134336. Its totient is φ = 6560870400.

The previous prime is 28312384259. The next prime is 28312384333. The reversal of 28312384320 is 2348321382.

It is a super-2 number, since 2×28312384320² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 124724047 + ... + 124724273.

Almost surely, 2^28312384320 is an apocalyptic number.

28312384320 is a gapful number since it is divisible by the number (20) 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 28312384320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55506567168).

28312384320 is an abundant number, since it is smaller than the sum of its proper divisors (82700750016).

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

28312384320 is a wasteful number, since it uses less digits than its factorization.

28312384320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 28312384320 in words is "twenty-eight billion, three hundred twelve million, three hundred eighty-four thousand, three hundred twenty".