1628041 has 4 divisors (see below), whose sum is σ = 1631872. Its totient is φ = 1624212.

The previous prime is 1627981. The next prime is 1628051. The reversal of 1628041 is 1408261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1628041 - 2¹¹ = 1625993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628051) 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, 1185 + ... + 2158.

It is an arithmetic number, because the mean of its divisors is an integer number (407968).

2^1628041 is an apocalyptic number.

It is an amenable number.

1628041 is a deficient number, since it is larger than the sum of its proper divisors (3831).

1628041 is an equidigital number, since it uses as much as digits as its factorization.

1628041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3830.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1628041 is about 1275.9470992169. The cubic root of 1628041 is about 117.6400262120.

The spelling of 1628041 in words is "one million, six hundred twenty-eight thousand, forty-one".