1006221328 has 40 divisors (see below), whose sum is σ = 2279887808. Its totient is φ = 421206912.

The previous prime is 1006221299. The next prime is 1006221329. The reversal of 1006221328 is 8231226001.

It is not an unprimeable number, because it can be changed into a prime (1006221329) 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, 99651 + ... + 109282.

Almost surely, 2^1006221328 is an apocalyptic number.

It is an amenable number.

1006221328 is an abundant number, since it is smaller than the sum of its proper divisors (1273666480).

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

1006221328 is a wasteful number, since it uses less digits than its factorization.

1006221328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208991 (or 208985 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1006221328 is about 31720.9919138731. The cubic root of 1006221328 is about 1002.0694902557.

Adding to 1006221328 its reverse (8231226001), we get a palindrome (9237447329).

The spelling of 1006221328 in words is "one billion, six million, two hundred twenty-one thousand, three hundred twenty-eight".