28407408205 has 32 divisors (see below), whose sum is σ = 38009088000. Its totient is φ = 20207246400.

The previous prime is 28407408199. The next prime is 28407408223. The reversal of 28407408205 is 50280470482.

It is not a de Polignac number, because 28407408205 - 2²⁵ = 28373853773 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 623760 + ... + 667750.

It is an arithmetic number, because the mean of its divisors is an integer number (1187784000).

Almost surely, 2^28407408205 is an apocalyptic number.

It is an amenable number.

28407408205 is a deficient number, since it is larger than the sum of its proper divisors (9601679795).

28407408205 is a wasteful number, since it uses less digits than its factorization.

28407408205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44265.

The product of its (nonzero) digits is 143360, while the sum is 40.

Adding to 28407408205 its reverse (50280470482), we get a palindrome (78687878687).

The spelling of 28407408205 in words is "twenty-eight billion, four hundred seven million, four hundred eight thousand, two hundred five".