1215628288 has 44 divisors (see below), whose sum is σ = 2777238592. Its totient is φ = 520980480.

The previous prime is 1215628273. The next prime is 1215628289. The reversal of 1215628288 is 8828265121.

It is not an unprimeable number, because it can be changed into a prime (1215628289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77628 + ... + 91963.

Almost surely, 2^1215628288 is an apocalyptic number.

It is an amenable number.

1215628288 is an abundant number, since it is smaller than the sum of its proper divisors (1561610304).

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

1215628288 is an equidigital number, since it uses as much as digits as its factorization.

1215628288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169618 (or 169600 counting only the distinct ones).

The product of its digits is 122880, while the sum is 43.

The square root of 1215628288 is about 34865.8613546260. The cubic root of 1215628288 is about 1067.2518899715.

The spelling of 1215628288 in words is "one billion, two hundred fifteen million, six hundred twenty-eight thousand, two hundred eighty-eight".