28418323560 has 256 divisors, whose sum is σ = 98084736000. Its totient is φ = 6514421760.

The previous prime is 28418323553. The next prime is 28418323567. The reversal of 28418323560 is 6532381482.

It is an interprime number because it is at equal distance from previous prime (28418323553) and next prime (28418323567).

It is a super-2 number, since 2×28418323560² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28418323567) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 25305159 + ... + 25306281.

It is an arithmetic number, because the mean of its divisors is an integer number (383143500).

Almost surely, 2^28418323560 is an apocalyptic number.

28418323560 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 28418323560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49042368000).

28418323560 is an abundant number, since it is smaller than the sum of its proper divisors (69666412440).

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

28418323560 is a wasteful number, since it uses less digits than its factorization.

28418323560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 28418323560 in words is "twenty-eight billion, four hundred eighteen million, three hundred twenty-three thousand, five hundred sixty".