28280415286613 has 64 divisors (see below), whose sum is σ = 35783554498560. Its totient is φ = 21777361892352.

The previous prime is 28280415286597. The next prime is 28280415286639. The reversal of 28280415286613 is 31668251408282.

It is a cyclic number.

It is not a de Polignac number, because 28280415286613 - 2⁴ = 28280415286597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28280415286663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2921827508 + ... + 2921837186.

It is an arithmetic number, because the mean of its divisors is an integer number (559118039040).

Almost surely, 2^{28280415286613} is an apocalyptic number.

28280415286613 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28280415286613 is a deficient number, since it is larger than the sum of its proper divisors (7503139211947).

28280415286613 is a wasteful number, since it uses less digits than its factorization.

28280415286613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11826.

The product of its (nonzero) digits is 8847360, while the sum is 56.

The spelling of 28280415286613 in words is "twenty-eight trillion, two hundred eighty billion, four hundred fifteen million, two hundred eighty-six thousand, six hundred thirteen".