28911173946 has 16 divisors (see below), whose sum is σ = 60865629600. Its totient is φ = 9129844368.

The previous prime is 28911173897. The next prime is 28911173959. The reversal of 28911173946 is 64937111982.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126803281 + ... + 126803508.

It is an arithmetic number, because the mean of its divisors is an integer number (3804101850).

Almost surely, 2^28911173946 is an apocalyptic number.

28911173946 is an abundant number, since it is smaller than the sum of its proper divisors (31954455654).

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

28911173946 is a wasteful number, since it uses less digits than its factorization.

28911173946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253606813.

The product of its digits is 653184, while the sum is 51.

The spelling of 28911173946 in words is "twenty-eight billion, nine hundred eleven million, one hundred seventy-three thousand, nine hundred forty-six".