1628006 has 4 divisors (see below), whose sum is σ = 2442012. Its totient is φ = 814002.

The previous prime is 1627981. The next prime is 1628051. The reversal of 1628006 is 6008261.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407000 + ... + 407003.

It is an arithmetic number, because the mean of its divisors is an integer number (610503).

2^1628006 is an apocalyptic number.

1628006 is a deficient number, since it is larger than the sum of its proper divisors (814006).

1628006 is an equidigital number, since it uses as much as digits as its factorization.

1628006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814005.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1628006 is about 1275.9333838410. The cubic root of 1628006 is about 117.6391831885.

The spelling of 1628006 in words is "one million, six hundred twenty-eight thousand, six".