1573480728 has 80 divisors (see below), whose sum is σ = 4434538680. Its totient is φ = 521240832.

The previous prime is 1573480709. The next prime is 1573480789. The reversal of 1573480728 is 8270843751.

1573480728 is a `hidden beast` number, since 1 + 573 + 4 + 8 + 0 + 72 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 98176 + ... + 113072.

Almost surely, 2^1573480728 is an apocalyptic number.

1573480728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1573480728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2217269340).

1573480728 is an abundant number, since it is smaller than the sum of its proper divisors (2861057952).

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

1573480728 is a wasteful number, since it uses less digits than its factorization.

1573480728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15078 (or 15065 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 1573480728 is about 39667.1240197723. The cubic root of 1573480728 is about 1163.1091600315.

The spelling of 1573480728 in words is "one billion, five hundred seventy-three million, four hundred eighty thousand, seven hundred twenty-eight".