28646058840 has 256 divisors, whose sum is σ = 99455385600. Its totient is φ = 6465540096.

The previous prime is 28646058829. The next prime is 28646058869. The reversal of 28646058840 is 4885064682.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26352777 + ... + 26353863.

It is an arithmetic number, because the mean of its divisors is an integer number (388497600).

Almost surely, 2^28646058840 is an apocalyptic number.

28646058840 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 28646058840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49727692800).

28646058840 is an abundant number, since it is smaller than the sum of its proper divisors (70809326760).

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

28646058840 is a wasteful number, since it uses less digits than its factorization.

28646058840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1470 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 51.

The spelling of 28646058840 in words is "twenty-eight billion, six hundred forty-six million, fifty-eight thousand, eight hundred forty".