1628039 has 8 divisors (see below), whose sum is σ = 1970208. Its totient is φ = 1313280.

The previous prime is 1627981. The next prime is 1628051. The reversal of 1628039 is 9308261.

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

It is a cyclic number.

It is not a de Polignac number, because 1628039 - 2⁸ = 1627783 is a prime.

It is a d-powerful number, because it can be written as 1 + 6³ + 2 + 8⁵ + 0 + 3¹³ + 9³ .

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6722 + ... + 6959.

It is an arithmetic number, because the mean of its divisors is an integer number (246276).

2^1628039 is an apocalyptic number.

1628039 is a deficient number, since it is larger than the sum of its proper divisors (342169).

1628039 is a wasteful number, since it uses less digits than its factorization.

1628039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13705.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1628039 is about 1275.9463154851. The cubic root of 1628039 is about 117.6399780395.

The spelling of 1628039 in words is "one million, six hundred twenty-eight thousand, thirty-nine".