1530420 has 48 divisors (see below), whose sum is σ = 4475520. Its totient is φ = 390016.

The previous prime is 1530409. The next prime is 1530457. The reversal of 1530420 is 240351.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1530420.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 826 + ... + 1934.

It is an arithmetic number, because the mean of its divisors is an integer number (93240).

2^1530420 is an apocalyptic number.

1530420 is a gapful number since it is divisible by the number (10) 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 1530420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2237760).

1530420 is an abundant number, since it is smaller than the sum of its proper divisors (2945100).

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

1530420 is a wasteful number, since it uses less digits than its factorization.

1530420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1530420 is about 1237.1014509732. The cubic root of 1530420 is about 115.2400781655.

Adding to 1530420 its reverse (240351), we get a palindrome (1770771).

The spelling of 1530420 in words is "one million, five hundred thirty thousand, four hundred twenty".