28509285414 has 32 divisors (see below), whose sum is σ = 60422400000. Its totient is φ = 8942504544.

The previous prime is 28509285373. The next prime is 28509285443. The reversal of 28509285414 is 41458290582.

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, 822214 + ... + 856185.

It is an arithmetic number, because the mean of its divisors is an integer number (1888200000).

Almost surely, 2^28509285414 is an apocalyptic number.

28509285414 is an abundant number, since it is smaller than the sum of its proper divisors (31913114586).

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

28509285414 is a wasteful number, since it uses less digits than its factorization.

28509285414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678572.

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 28509285414 in words is "twenty-eight billion, five hundred nine million, two hundred eighty-five thousand, four hundred fourteen".