1628267 has 4 divisors (see below), whose sum is σ = 1641216. Its totient is φ = 1615320.

The previous prime is 1628261. The next prime is 1628279. The reversal of 1628267 is 7628261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7628261 = 131 ⋅58231.

It is a cyclic number.

It is not a de Polignac number, because 1628267 - 2⁶ = 1628203 is a prime.

It is a super-3 number, since 3×1628267³ = 12950845373335530489, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1628261) 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 3 ways as a sum of consecutive naturals, for example, 6284 + ... + 6537.

It is an arithmetic number, because the mean of its divisors is an integer number (410304).

2^1628267 is an apocalyptic number.

1628267 is a deficient number, since it is larger than the sum of its proper divisors (12949).

1628267 is a wasteful number, since it uses less digits than its factorization.

1628267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12948.

The product of its digits is 8064, while the sum is 32.

The square root of 1628267 is about 1276.0356578090. The cubic root of 1628267 is about 117.6454694442.

The spelling of 1628267 in words is "one million, six hundred twenty-eight thousand, two hundred sixty-seven".