28550205147 has 24 divisors (see below), whose sum is σ = 39136683600. Its totient is φ = 18502113280.

The previous prime is 28550205133. The next prime is 28550205149. The reversal of 28550205147 is 74150205582.

It is not a de Polignac number, because 28550205147 - 2¹⁴ = 28550188763 is a prime.

It is a super-2 number, since 2×28550205147² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28550205149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39707854 + ... + 39708572.

It is an arithmetic number, because the mean of its divisors is an integer number (1630695150).

Almost surely, 2^28550205147 is an apocalyptic number.

28550205147 is a deficient number, since it is larger than the sum of its proper divisors (10586478453).

28550205147 is an frugal number, since it uses more digits than its factorization.

28550205147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931 (or 1212 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 39.

The spelling of 28550205147 in words is "twenty-eight billion, five hundred fifty million, two hundred five thousand, one hundred forty-seven".