1215210268 has 12 divisors (see below), whose sum is σ = 2155750240. Its totient is φ = 599281632.

The previous prime is 1215210253. The next prime is 1215210329. The reversal of 1215210268 is 8620125121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2080548 + ... + 2081131.

Almost surely, 2^1215210268 is an apocalyptic number.

It is an amenable number.

1215210268 is a deficient number, since it is larger than the sum of its proper divisors (940539972).

1215210268 is a wasteful number, since it uses less digits than its factorization.

1215210268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161756 (or 4161754 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 1215210268 is about 34859.8661500586. The cubic root of 1215210268 is about 1067.1295434212.

Adding to 1215210268 its reverse (8620125121), we get a palindrome (9835335389).

The spelling of 1215210268 in words is "one billion, two hundred fifteen million, two hundred ten thousand, two hundred sixty-eight".