1628135 has 4 divisors (see below), whose sum is σ = 1953768. Its totient is φ = 1302504.

The previous prime is 1628131. The next prime is 1628149. The reversal of 1628135 is 5318261.

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

It is a cyclic number.

It is not a de Polignac number, because 1628135 - 2² = 1628131 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 (1628131) 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, 162809 + ... + 162818.

It is an arithmetic number, because the mean of its divisors is an integer number (488442).

2^1628135 is an apocalyptic number.

1628135 is a deficient number, since it is larger than the sum of its proper divisors (325633).

1628135 is an equidigital number, since it uses as much as digits as its factorization.

1628135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325632.

The product of its digits is 1440, while the sum is 26.

The square root of 1628135 is about 1275.9839340681. The cubic root of 1628135 is about 117.6422902724.

The spelling of 1628135 in words is "one million, six hundred twenty-eight thousand, one hundred thirty-five".