1628826 has 8 divisors (see below), whose sum is σ = 3257664. Its totient is φ = 542940.

The previous prime is 1628801. The next prime is 1628839. The reversal of 1628826 is 6288261.

It is a sphenic number, since it is the product of 3 distinct primes.

1628826 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 135730 + ... + 135741.

It is an arithmetic number, because the mean of its divisors is an integer number (407208).

2^1628826 is an apocalyptic number.

1628826 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1628826 is a wasteful number, since it uses less digits than its factorization.

1628826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271476.

The product of its digits is 9216, while the sum is 33.

The square root of 1628826 is about 1276.2546767789. The cubic root of 1628826 is about 117.6589308509.

The spelling of 1628826 in words is "one million, six hundred twenty-eight thousand, eight hundred twenty-six".