1530220 has 12 divisors (see below), whose sum is σ = 3213504. Its totient is φ = 612080.

The previous prime is 1530197. The next prime is 1530227. The reversal of 1530220 is 220351.

1530220 = T₄₉₉ + T₅₀₀ + ... + T₅₁₀.

It is a self number, because there is not a number n which added to its sum of digits gives 1530220.

It is not an unprimeable number, because it can be changed into a prime (1530227) 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, 38236 + ... + 38275.

It is an arithmetic number, because the mean of its divisors is an integer number (267792).

2^1530220 is an apocalyptic number.

1530220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1530220 is an abundant number, since it is smaller than the sum of its proper divisors (1683284).

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

1530220 is a wasteful number, since it uses less digits than its factorization.

1530220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76520 (or 76518 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 1530220 is about 1237.0206142179. The cubic root of 1530220 is about 115.2350579707.

Adding to 1530220 its reverse (220351), we get a palindrome (1750571).

The spelling of 1530220 in words is "one million, five hundred thirty thousand, two hundred twenty".