28058333640 has 32 divisors (see below), whose sum is σ = 84175001280. Its totient is φ = 7482222272.

The previous prime is 28058333623. The next prime is 28058333669. The reversal of 28058333640 is 4633385082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28058333592 and 28058333601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116909604 + ... + 116909843.

It is an arithmetic number, because the mean of its divisors is an integer number (2630468790).

Almost surely, 2^28058333640 is an apocalyptic number.

28058333640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28058333640 is an abundant number, since it is smaller than the sum of its proper divisors (56116667640).

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

28058333640 is a wasteful number, since it uses less digits than its factorization.

28058333640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233819461 (or 233819457 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 28058333640 in words is "twenty-eight billion, fifty-eight million, three hundred thirty-three thousand, six hundred forty".