1530450 has 72 divisors (see below), whose sum is σ = 4352400. Its totient is φ = 384480.

The previous prime is 1530409. The next prime is 1530457. The reversal of 1530450 is 540351.

It is a Harshad number since it is a multiple of its sum of digits (18).

1530450 is a Rhonda number in base 12.

It is not an unprimeable number, because it can be changed into a prime (1530457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8461 + ... + 8639.

It is an arithmetic number, because the mean of its divisors is an integer number (60450).

2^1530450 is an apocalyptic number.

1530450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1530450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2176200).

1530450 is an abundant number, since it is smaller than the sum of its proper divisors (2821950).

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

1530450 is a wasteful number, since it uses less digits than its factorization.

1530450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1530450 is about 1237.1135760309. The cubic root of 1530450 is about 115.2408311570.

Subtracting from 1530450 its reverse (540351), we obtain a palindrome (990099).

The spelling of 1530450 in words is "one million, five hundred thirty thousand, four hundred fifty".