1426688 has 18 divisors (see below), whose sum is σ = 2848314. Its totient is φ = 713216.

The previous prime is 1426673. The next prime is 1426693. The reversal of 1426688 is 8866241.

It can be written as a sum of positive squares in only one way, i.e., 861184 + 565504 = 928^2 + 752^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2531 + ... + 3042.

2^1426688 is an apocalyptic number.

It is an amenable number.

1426688 is a deficient number, since it is larger than the sum of its proper divisors (1421626).

1426688 is an frugal number, since it uses more digits than its factorization.

1426688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5589 (or 5575 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 1426688 is about 1194.4404547737. The cubic root of 1426688 is about 112.5752714369.

The spelling of 1426688 in words is "one million, four hundred twenty-six thousand, six hundred eighty-eight".