1322688 has 42 divisors (see below), whose sum is σ = 3542284. Its totient is φ = 435584.

The previous prime is 1322681. The next prime is 1322689. The reversal of 1322688 is 8862231.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1322681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15895 + ... + 15977.

2^1322688 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 1322688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1771142).

1322688 is an abundant number, since it is smaller than the sum of its proper divisors (2219596).

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

1322688 is an frugal number, since it uses more digits than its factorization.

1322688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 88 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 1322688 is about 1150.0817362257. The cubic root of 1322688 is about 109.7705409670.

The spelling of 1322688 in words is "one million, three hundred twenty-two thousand, six hundred eighty-eight".