1530728844 has 48 divisors (see below), whose sum is σ = 3923162880. Its totient is φ = 462369600.

The previous prime is 1530728723. The next prime is 1530728851. The reversal of 1530728844 is 4488270351.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1530728796 and 1530728805.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140707 + ... + 151194.

It is an arithmetic number, because the mean of its divisors is an integer number (81732560).

Almost surely, 2^1530728844 is an apocalyptic number.

It is an amenable number.

1530728844 is an abundant number, since it is smaller than the sum of its proper divisors (2392434036).

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

1530728844 is a wasteful number, since it uses less digits than its factorization.

1530728844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291950 (or 291948 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 1530728844 is about 39124.5299524480. The cubic root of 1530728844 is about 1152.4782959165.

The spelling of 1530728844 in words is "one billion, five hundred thirty million, seven hundred twenty-eight thousand, eight hundred forty-four".