1322999988 has 24 divisors (see below), whose sum is σ = 3087588000. Its totient is φ = 440916000.

The previous prime is 1322999987. The next prime is 1322999999. The reversal of 1322999988 is 8899992231.

1322999988 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322999983) 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, 120738 + ... + 131238.

It is an arithmetic number, because the mean of its divisors is an integer number (128649500).

Almost surely, 2^1322999988 is an apocalyptic number.

It is an amenable number.

1322999988 is an abundant number, since it is smaller than the sum of its proper divisors (1764588012).

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

1322999988 is a wasteful number, since it uses less digits than its factorization.

1322999988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21007 (or 21005 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 60.

The square root of 1322999988 is about 36373.0667939892. The cubic root of 1322999988 is about 1097.7917096878.

The spelling of 1322999988 in words is "one billion, three hundred twenty-two million, nine hundred ninety-nine thousand, nine hundred eighty-eight".