1628726 has 16 divisors (see below), whose sum is σ = 2695248. Its totient is φ = 732000.

The previous prime is 1628701. The next prime is 1628729. The reversal of 1628726 is 6278261.

It is a Curzon number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1628692 and 1628701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628729) 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, 1856 + ... + 2588.

It is an arithmetic number, because the mean of its divisors is an integer number (168453).

2^1628726 is an apocalyptic number.

1628726 is a deficient number, since it is larger than the sum of its proper divisors (1066522).

1628726 is a wasteful number, since it uses less digits than its factorization.

1628726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847.

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

The square root of 1628726 is about 1276.2154990440. The cubic root of 1628726 is about 117.6565229543.

It can be divided in two parts, 162 and 8726, that added together give a palindrome (8888).

The spelling of 1628726 in words is "one million, six hundred twenty-eight thousand, seven hundred twenty-six".