1215066996 has 216 divisors, whose sum is σ = 3727724000. Its totient is φ = 331309440.

The previous prime is 1215066913. The next prime is 1215066997. The reversal of 1215066996 is 6996605121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215066997) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2434755 + ... + 2435253.

Almost surely, 2^1215066996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215066996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1863862000).

1215066996 is an abundant number, since it is smaller than the sum of its proper divisors (2512657004).

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

1215066996 is a wasteful number, since it uses less digits than its factorization.

1215066996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 1215066996 is about 34857.8111188870. The cubic root of 1215066996 is about 1067.0876039597.

The spelling of 1215066996 in words is "one billion, two hundred fifteen million, sixty-six thousand, nine hundred ninety-six".