1080457728 has 120 divisors (see below), whose sum is σ = 3300017952. Its totient is φ = 307728384.

The previous prime is 1080457723. The next prime is 1080457747. The reversal of 1080457728 is 8277540801.

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 1080457728.

It is not an unprimeable number, because it can be changed into a prime (1080457723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3408226 + ... + 3408542.

Almost surely, 2^1080457728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1080457728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1650008976).

1080457728 is an abundant number, since it is smaller than the sum of its proper divisors (2219560224).

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

1080457728 is an frugal number, since it uses more digits than its factorization.

1080457728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 1080457728 is about 32870.3168223247. The cubic root of 1080457728 is about 1026.1304926950.

Multiplying 1080457728 by its sum of digits (42), we get a square (45379224576 = 213024²).

1080457728 divided by its sum of digits (42) gives a square (25725184 = 5072²).

It can be divided in two parts, 1080457 and 728, that added together give a triangular number (1081185 = T₁₄₇₀).

The spelling of 1080457728 in words is "one billion, eighty million, four hundred fifty-seven thousand, seven hundred twenty-eight".