28645049506 has 8 divisors (see below), whose sum is σ = 43966820304. Its totient is φ = 13989442740.

The previous prime is 28645049479. The next prime is 28645049579. The reversal of 28645049506 is 60594054682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28645049506² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28645049506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166540900 + ... + 166541071.

It is an arithmetic number, because the mean of its divisors is an integer number (5495852538).

Almost surely, 2^28645049506 is an apocalyptic number.

28645049506 is a deficient number, since it is larger than the sum of its proper divisors (15321770798).

28645049506 is a wasteful number, since it uses less digits than its factorization.

28645049506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333082016.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 28645049506 in words is "twenty-eight billion, six hundred forty-five million, forty-nine thousand, five hundred six".