1628823 has 8 divisors (see below), whose sum is σ = 2482048. Its totient is φ = 930744.

The previous prime is 1628801. The next prime is 1628839. The reversal of 1628823 is 3288261.

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

It is not a de Polignac number, because 1628823 - 2⁸ = 1628567 is a prime.

It is a super-3 number, since 3×1628823³ = 12964116776184833301, which contains 333 as substring.

It is a Duffinian number.

1628823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628873) 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, 38761 + ... + 38802.

It is an arithmetic number, because the mean of its divisors is an integer number (310256).

2^1628823 is an apocalyptic number.

1628823 is a deficient number, since it is larger than the sum of its proper divisors (853225).

1628823 is an equidigital number, since it uses as much as digits as its factorization.

1628823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77573.

The product of its digits is 4608, while the sum is 30.

The square root of 1628823 is about 1276.2535014643. The cubic root of 1628823 is about 117.6588586155.

The spelling of 1628823 in words is "one million, six hundred twenty-eight thousand, eight hundred twenty-three".