1681422 has 16 divisors (see below), whose sum is σ = 3411072. Its totient is φ = 552440.

The previous prime is 1681411. The next prime is 1681423. The reversal of 1681422 is 2241861.

It is a junction number, because it is equal to n+sod(n) for n = 1681392 and 1681401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681423) 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, 1548 + ... + 2399.

It is an arithmetic number, because the mean of its divisors is an integer number (213192).

2^1681422 is an apocalyptic number.

1681422 is an abundant number, since it is smaller than the sum of its proper divisors (1729650).

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

1681422 is a wasteful number, since it uses less digits than its factorization.

1681422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4023.

The product of its digits is 768, while the sum is 24.

The square root of 1681422 is about 1296.6965720630. The cubic root of 1681422 is about 118.9119702989.

It can be divided in two parts, 16814 and 22, that added together give a triangular number (16836 = T₁₈₃).

The spelling of 1681422 in words is "one million, six hundred eighty-one thousand, four hundred twenty-two".