1422784 has 56 divisors (see below), whose sum is σ = 3218688. Its totient is φ = 618240.

The previous prime is 1422763. The next prime is 1422797. The reversal of 1422784 is 4872241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30249 + ... + 30295.

2^1422784 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 1422784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609344).

1422784 is an abundant number, since it is smaller than the sum of its proper divisors (1795904).

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

1422784 is a wasteful number, since it uses less digits than its factorization.

1422784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 103 counting only the distinct ones).

The product of its digits is 3584, while the sum is 28.

The square root of 1422784 is about 1192.8050972393. The cubic root of 1422784 is about 112.4724936868.

It can be divided in two parts, 142 and 2784, that added together give a triangular number (2926 = T₇₆).

The spelling of 1422784 in words is "one million, four hundred twenty-two thousand, seven hundred eighty-four".