28078325562 has 128 divisors (see below), whose sum is σ = 66131251200. Its totient is φ = 7783142400.

The previous prime is 28078325543. The next prime is 28078325573. The reversal of 28078325562 is 26552387082.

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 63 ways as a sum of consecutive naturals, for example, 70020562 + ... + 70020962.

It is an arithmetic number, because the mean of its divisors is an integer number (516650400).

Almost surely, 2^28078325562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28078325562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33065625600).

28078325562 is an abundant number, since it is smaller than the sum of its proper divisors (38052925638).

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

28078325562 is a wasteful number, since it uses less digits than its factorization.

28078325562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796.

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 28078325562 in words is "twenty-eight billion, seventy-eight million, three hundred twenty-five thousand, five hundred sixty-two".