28969395406 has 16 divisors (see below), whose sum is σ = 51263815680. Its totient is φ = 12014956440.

The previous prime is 28969395383. The next prime is 28969395419. The reversal of 28969395406 is 60459396982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33374446 + ... + 33375313.

It is an arithmetic number, because the mean of its divisors is an integer number (3203988480).

Almost surely, 2^28969395406 is an apocalyptic number.

28969395406 is a deficient number, since it is larger than the sum of its proper divisors (22294420274).

28969395406 is a wasteful number, since it uses less digits than its factorization.

28969395406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66749799.

The product of its (nonzero) digits is 25194240, while the sum is 61.

The spelling of 28969395406 in words is "twenty-eight billion, nine hundred sixty-nine million, three hundred ninety-five thousand, four hundred six".