1422288 has 120 divisors (see below), whose sum is σ = 4874688. Its totient is φ = 377856.

The previous prime is 1422287. The next prime is 1422293. The reversal of 1422288 is 8822241.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17095 + ... + 17177.

2^1422288 is an apocalyptic number.

1422288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1422288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2437344).

1422288 is an abundant number, since it is smaller than the sum of its proper divisors (3452400).

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

1422288 is a wasteful number, since it uses less digits than its factorization.

1422288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 112 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 1422288 is about 1192.5971658527. The cubic root of 1422288 is about 112.4594224029.

The spelling of 1422288 in words is "one million, four hundred twenty-two thousand, two hundred eighty-eight".