1628266 has 8 divisors (see below), whose sum is σ = 2488644. Its totient is φ = 798720.

The previous prime is 1628261. The next prime is 1628279. The reversal of 1628266 is 6628261.

It can be written as a sum of positive squares in 2 ways, for example, as 1525225 + 103041 = 1235^2 + 321^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1628261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7575 + ... + 7786.

2^1628266 is an apocalyptic number.

1628266 is a deficient number, since it is larger than the sum of its proper divisors (860378).

1628266 is a wasteful number, since it uses less digits than its factorization.

1628266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15416.

The product of its digits is 6912, while the sum is 31.

The square root of 1628266 is about 1276.0352659703. The cubic root of 1628266 is about 117.6454453602.

It can be divided in two parts, 16 and 28266, that added together give a palindrome (28282).

The spelling of 1628266 in words is "one million, six hundred twenty-eight thousand, two hundred sixty-six".