28969650026 has 4 divisors (see below), whose sum is σ = 43454475042. Its totient is φ = 14484825012.

The previous prime is 28969650019. The next prime is 28969650041. The reversal of 28969650026 is 62005696982.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62005696982 = 2 ⋅31002848491.

It can be written as a sum of positive squares in only one way, i.e., 25187277025 + 3782373001 = 158705^2 + 61501^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28969650026.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7242412505 + ... + 7242412508.

Almost surely, 2^28969650026 is an apocalyptic number.

28969650026 is a deficient number, since it is larger than the sum of its proper divisors (14484825016).

28969650026 is a wasteful number, since it uses less digits than its factorization.

28969650026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14484825015.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 28969650026 in words is "twenty-eight billion, nine hundred sixty-nine million, six hundred fifty thousand, twenty-six".