28358246499840 has 2240 divisors, whose sum is σ = 109552575686400. Its totient is φ = 7024929472512.

The previous prime is 28358246499823. The next prime is 28358246499871. The reversal of 28358246499840 is 4899464285382.

28358246499840 is a `hidden beast` number, since 2 + 8 + 3 + 5 + 82 + 464 + 9 + 9 + 84 + 0 = 666.

It is a super-2 number, since 2×28358246499840² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

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 223 ways as a sum of consecutive naturals, for example, 265030341067 + ... + 265030341173.

It is an arithmetic number, because the mean of its divisors is an integer number (48907399860).

Almost surely, 2^{28358246499840} is an apocalyptic number.

28358246499840 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 28358246499840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54776287843200).

28358246499840 is an abundant number, since it is smaller than the sum of its proper divisors (81194329186560).

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

28358246499840 is an equidigital number, since it uses as much as digits as its factorization.

28358246499840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 955514880, while the sum is 72.

The spelling of 28358246499840 in words is "twenty-eight trillion, three hundred fifty-eight billion, two hundred forty-six million, four hundred ninety-nine thousand, eight hundred forty".