1428886 has 4 divisors (see below), whose sum is σ = 2143332. Its totient is φ = 714442.

The previous prime is 1428863. The next prime is 1428887. The reversal of 1428886 is 6888241.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357220 + ... + 357223.

It is an arithmetic number, because the mean of its divisors is an integer number (535833).

2^1428886 is an apocalyptic number.

1428886 is a deficient number, since it is larger than the sum of its proper divisors (714446).

1428886 is an equidigital number, since it uses as much as digits as its factorization.

1428886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714445.

The product of its digits is 24576, while the sum is 37.

The square root of 1428886 is about 1195.3601967608. The cubic root of 1428886 is about 112.6330540971.

It can be divided in two parts, 14 and 28886, that multiplied together give a palindrome (404404).

The spelling of 1428886 in words is "one million, four hundred twenty-eight thousand, eight hundred eighty-six".