1628247 has 8 divisors (see below), whose sum is σ = 2185456. Its totient is φ = 1078272.

The previous prime is 1628227. The next prime is 1628261. The reversal of 1628247 is 7428261.

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

It is not a de Polignac number, because 1628247 - 2⁶ = 1628183 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1258 + ... + 2199.

It is an arithmetic number, because the mean of its divisors is an integer number (273182).

2^1628247 is an apocalyptic number.

1628247 is a deficient number, since it is larger than the sum of its proper divisors (557209).

1628247 is a wasteful number, since it uses less digits than its factorization.

1628247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617.

The product of its digits is 5376, while the sum is 30.

The square root of 1628247 is about 1276.0278210133. The cubic root of 1628247 is about 117.6449877626.

The spelling of 1628247 in words is "one million, six hundred twenty-eight thousand, two hundred forty-seven".