28424207406 has 32 divisors (see below), whose sum is σ = 65027888640. Its totient is φ = 8113918176.

The previous prime is 28424207389. The next prime is 28424207411. The reversal of 28424207406 is 60470242482.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256026 + ... + 349853.

It is an arithmetic number, because the mean of its divisors is an integer number (2032121520).

Almost surely, 2^28424207406 is an apocalyptic number.

28424207406 is an abundant number, since it is smaller than the sum of its proper divisors (36603681234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28424207406 is a wasteful number, since it uses less digits than its factorization.

28424207406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607008.

The product of its (nonzero) digits is 172032, while the sum is 39.

Adding to 28424207406 its reverse (60470242482), we get a palindrome (88894449888).

The spelling of 28424207406 in words is "twenty-eight billion, four hundred twenty-four million, two hundred seven thousand, four hundred six".