1530456728 has 16 divisors (see below), whose sum is σ = 2874092760. Its totient is φ = 764032000.

The previous prime is 1530456721. The next prime is 1530456743. The reversal of 1530456728 is 8276540351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530456721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144098 + ... + 154353.

Almost surely, 2^1530456728 is an apocalyptic number.

It is an amenable number.

1530456728 is a deficient number, since it is larger than the sum of its proper divisors (1343636032).

1530456728 is a wasteful number, since it uses less digits than its factorization.

1530456728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299098 (or 299094 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 1530456728 is about 39121.0522353374. The cubic root of 1530456728 is about 1152.4100002654.

The spelling of 1530456728 in words is "one billion, five hundred thirty million, four hundred fifty-six thousand, seven hundred twenty-eight".