1530421200 has 360 divisors, whose sum is σ = 6622689216. Its totient is φ = 317952000.

The previous prime is 1530421187. The next prime is 1530421201. The reversal of 1530421200 is 21240351.

1530421200 is a `hidden beast` number, since 15 + 30 + 421 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530421201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 274440 + ... + 279960.

Almost surely, 2^1530421200 is an apocalyptic number.

1530421200 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 1530421200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3311344608).

1530421200 is an abundant number, since it is smaller than the sum of its proper divisors (5092268016).

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

1530421200 is a wasteful number, since it uses less digits than its factorization.

1530421200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5563 (or 5549 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1530421200 is about 39120.5981549362. The cubic root of 1530421200 is about 1152.4010828535.

Adding to 1530421200 its reverse (21240351), we get a palindrome (1551661551).

The spelling of 1530421200 in words is "one billion, five hundred thirty million, four hundred twenty-one thousand, two hundred".