1628433 has 24 divisors (see below), whose sum is σ = 2527200. Its totient is φ = 1007424.

The previous prime is 1628401. The next prime is 1628441. The reversal of 1628433 is 3348261.

It is a happy number.

1628433 is a `hidden beast` number, since 1 + 628 + 4 + 33 = 666.

It is not a de Polignac number, because 1628433 - 2⁵ = 1628401 is a prime.

It is a d-powerful number, because it can be written as 1 + 6² + 2¹⁵ + 8³ + 4³ + 3⁶ + 3¹³ .

1628433 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1628397 and 1628406.

It is not an unprimeable number, because it can be changed into a prime (1628633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15166 + ... + 15272.

It is an arithmetic number, because the mean of its divisors is an integer number (105300).

2^1628433 is an apocalyptic number.

It is an amenable number.

1628433 is a deficient number, since it is larger than the sum of its proper divisors (898767).

1628433 is a wasteful number, since it uses less digits than its factorization.

1628433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 218 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1628433 is about 1276.1007013555. The cubic root of 1628433 is about 117.6494672497.

The spelling of 1628433 in words is "one million, six hundred twenty-eight thousand, four hundred thirty-three".