1215412000 has 192 divisors, whose sum is σ = 3402217728. Its totient is φ = 422400000.

The previous prime is 1215411997. The next prime is 1215412027. The reversal of 1215412000 is 2145121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1011400 + ... + 1012600.

It is an arithmetic number, because the mean of its divisors is an integer number (17719884).

Almost surely, 2^1215412000 is an apocalyptic number.

1215412000 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 1215412000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701108864).

1215412000 is an abundant number, since it is smaller than the sum of its proper divisors (2186805728).

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

1215412000 is a wasteful number, since it uses less digits than its factorization.

1215412000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1242 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1215412000 is about 34862.7595006477. The cubic root of 1215412000 is about 1067.1885900657.

Adding to 1215412000 its reverse (2145121), we get a palindrome (1217557121).

The spelling of 1215412000 in words is "one billion, two hundred fifteen million, four hundred twelve thousand".