28960721862 has 32 divisors (see below), whose sum is σ = 58667172480. Its totient is φ = 9529968000.

The previous prime is 28960721857. The next prime is 28960721873. The reversal of 28960721862 is 26812706982.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 85089 + ... + 255267.

It is an arithmetic number, because the mean of its divisors is an integer number (1833349140).

Almost surely, 2^28960721862 is an apocalyptic number.

It is a pronic number, being equal to 170178×170179.

28960721862 is an abundant number, since it is smaller than the sum of its proper divisors (29706450618).

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

28960721862 is a wasteful number, since it uses less digits than its factorization.

28960721862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170548.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 28960721862 in words is "twenty-eight billion, nine hundred sixty million, seven hundred twenty-one thousand, eight hundred sixty-two".