1215030000 has 200 divisors, whose sum is σ = 3970991376. Its totient is φ = 320000000.

The previous prime is 1215029999. The next prime is 1215030053. The reversal of 1215030000 is 305121.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3029800 + ... + 3030200.

Almost surely, 2^1215030000 is an apocalyptic number.

1215030000 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 1215030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1985495688).

1215030000 is an abundant number, since it is smaller than the sum of its proper divisors (2755961376).

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

1215030000 is a wasteful number, since it uses less digits than its factorization.

1215030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1215030000 is about 34857.2804446933. The cubic root of 1215030000 is about 1067.0767737273.

Adding to 1215030000 its reverse (305121), we get a palindrome (1215335121).

The spelling of 1215030000 in words is "one billion, two hundred fifteen million, thirty thousand".