28645836454 has 16 divisors (see below), whose sum is σ = 43919695296. Its totient is φ = 14006448000.

The previous prime is 28645836421. The next prime is 28645836467. The reversal of 28645836454 is 45463854682.

It is a super-2 number, since 2×28645836454² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28645836395 and 28645836404.

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 7 ways as a sum of consecutive naturals, for example, 13977 + ... + 239764.

It is an arithmetic number, because the mean of its divisors is an integer number (2744980956).

Almost surely, 2^28645836454 is an apocalyptic number.

28645836454 is a deficient number, since it is larger than the sum of its proper divisors (15273858842).

28645836454 is a wasteful number, since it uses less digits than its factorization.

28645836454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254991.

The product of its digits is 22118400, while the sum is 55.

The spelling of 28645836454 in words is "twenty-eight billion, six hundred forty-five million, eight hundred thirty-six thousand, four hundred fifty-four".