28662240406 has 8 divisors (see below), whose sum is σ = 43387795440. Its totient is φ = 14199641928.

The previous prime is 28662240403. The next prime is 28662240461. The reversal of 28662240406 is 60404226682.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28662240401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65738866 + ... + 65739301.

It is an arithmetic number, because the mean of its divisors is an integer number (5423474430).

Almost surely, 2^28662240406 is an apocalyptic number.

28662240406 is a deficient number, since it is larger than the sum of its proper divisors (14725555034).

28662240406 is a wasteful number, since it uses less digits than its factorization.

28662240406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131478278.

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 28662240406 in words is "twenty-eight billion, six hundred sixty-two million, two hundred forty thousand, four hundred six".