28909246253922 has 48 divisors (see below), whose sum is σ = 63395958513888. Its totient is φ = 9519623297280.

The previous prime is 28909246253837. The next prime is 28909246253989. The reversal of 28909246253922 is 22935264290982.

28909246253922 is a `hidden beast` number, since 2 + 8 + 9 + 0 + 92 + 4 + 6 + 2 + 539 + 2 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28909246253922.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20102973 + ... + 21492975.

It is an arithmetic number, because the mean of its divisors is an integer number (1320749135706).

Almost surely, 2^{28909246253922} is an apocalyptic number.

28909246253922 is an abundant number, since it is smaller than the sum of its proper divisors (34486712259966).

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

28909246253922 is a wasteful number, since it uses less digits than its factorization.

28909246253922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404015 (or 1404012 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 63.

The spelling of 28909246253922 in words is "twenty-eight trillion, nine hundred nine billion, two hundred forty-six million, two hundred fifty-three thousand, nine hundred twenty-two".