1085056728 has 64 divisors (see below), whose sum is σ = 3152736000. Its totient is φ = 304758912.

The previous prime is 1085056697. The next prime is 1085056729. The reversal of 1085056728 is 8276505801.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1085056728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085056729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44823 + ... + 64646.

It is an arithmetic number, because the mean of its divisors is an integer number (49261500).

Almost surely, 2^1085056728 is an apocalyptic number.

It is an amenable number.

1085056728 is an abundant number, since it is smaller than the sum of its proper divisors (2067679272).

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

1085056728 is a wasteful number, since it uses less digits than its factorization.

1085056728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109544 (or 109540 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 1085056728 is about 32940.1992707998. The cubic root of 1085056728 is about 1027.5843500232.

The spelling of 1085056728 in words is "one billion, eighty-five million, fifty-six thousand, seven hundred twenty-eight".