28630906545 has 32 divisors (see below), whose sum is σ = 47532659328. Its totient is φ = 14703925248.

The previous prime is 28630906487. The next prime is 28630906559. The reversal of 28630906545 is 54560903682.

It is not a de Polignac number, because 28630906545 - 2⁷ = 28630906417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28630906494 and 28630906503.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212079 + ... + 319748.

It is an arithmetic number, because the mean of its divisors is an integer number (1485395604).

Almost surely, 2^28630906545 is an apocalyptic number.

It is an amenable number.

28630906545 is a deficient number, since it is larger than the sum of its proper divisors (18901752783).

28630906545 is a wasteful number, since it uses less digits than its factorization.

28630906545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531969.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 28630906545 in words is "twenty-eight billion, six hundred thirty million, nine hundred six thousand, five hundred forty-five".