1530705 has 16 divisors (see below), whose sum is σ = 2672064. Its totient is φ = 742080.

The previous prime is 1530703. The next prime is 1530709. The reversal of 1530705 is 5070351.

It is a happy number.

It is not a de Polignac number, because 1530705 - 2¹ = 1530703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1530703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4474 + ... + 4803.

It is an arithmetic number, because the mean of its divisors is an integer number (167004).

2^1530705 is an apocalyptic number.

1530705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1530705 is a deficient number, since it is larger than the sum of its proper divisors (1141359).

1530705 is a wasteful number, since it uses less digits than its factorization.

1530705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9296.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 1530705 is about 1237.2166342238. The cubic root of 1530705 is about 115.2472311875.

The spelling of 1530705 in words is "one million, five hundred thirty thousand, seven hundred five".