28818817471628 has 12 divisors (see below), whose sum is σ = 50696977333632. Its totient is φ = 14333966804880.

The previous prime is 28818817471627. The next prime is 28818817471699. The reversal of 28818817471628 is 82617471881882.

It is a super-2 number, since 2×28818817471628² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28818817471627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18860481875 + ... + 18860483402.

It is an arithmetic number, because the mean of its divisors is an integer number (4224748111136).

Almost surely, 2^{28818817471628} is an apocalyptic number.

It is an amenable number.

28818817471628 is a deficient number, since it is larger than the sum of its proper divisors (21878159862004).

28818817471628 is a wasteful number, since it uses less digits than its factorization.

28818817471628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37720965472 (or 37720965470 counting only the distinct ones).

The product of its digits is 154140672, while the sum is 71.

The spelling of 28818817471628 in words is "twenty-eight trillion, eight hundred eighteen billion, eight hundred seventeen million, four hundred seventy-one thousand, six hundred twenty-eight".