1628343 has 12 divisors (see below), whose sum is σ = 2439528. Its totient is φ = 1085400.

The previous prime is 1628329. The next prime is 1628353. The reversal of 1628343 is 3438261.

It is a happy number.

1628343 is a `hidden beast` number, since 1 + 628 + 34 + 3 = 666.

It is not a de Polignac number, because 1628343 - 2⁶ = 1628279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 1 + 6³ + 2¹⁵ + 8 + 3 + 4⁵ + 3¹³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3108 + ... + 3593.

It is an arithmetic number, because the mean of its divisors is an integer number (203294).

2^1628343 is an apocalyptic number.

1628343 is a deficient number, since it is larger than the sum of its proper divisors (811185).

1628343 is an frugal number, since it uses more digits than its factorization.

1628343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6716 (or 6704 counting only the distinct ones).

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

The square root of 1628343 is about 1276.0654371936. The cubic root of 1628343 is about 117.6472997985.

The spelling of 1628343 in words is "one million, six hundred twenty-eight thousand, three hundred forty-three".