1215068928 has 72 divisors (see below), whose sum is σ = 3252093936. Its totient is φ = 402739200.

The previous prime is 1215068903. The next prime is 1215068929. The reversal of 1215068928 is 8298605121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1215068928.

It is not an unprimeable number, because it can be changed into a prime (1215068929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134638 + ... + 143378.

Almost surely, 2^1215068928 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 1215068928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1626046968).

1215068928 is an abundant number, since it is smaller than the sum of its proper divisors (2037025008).

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

1215068928 is an equidigital number, since it uses as much as digits as its factorization.

1215068928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8941 (or 8927 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 1215068928 is about 34857.8388314594. The cubic root of 1215068928 is about 1067.0881695286.

The spelling of 1215068928 in words is "one billion, two hundred fifteen million, sixty-eight thousand, nine hundred twenty-eight".