1628427 has 8 divisors (see below), whose sum is σ = 2199040. Its totient is φ = 1071720.

The previous prime is 1628401. The next prime is 1628441. The reversal of 1628427 is 7248261.

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

It is not a de Polignac number, because 1628427 - 2⁷ = 1628299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1628394 and 1628403.

It is not an unprimeable number, because it can be changed into a prime (1628467) 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, 3199 + ... + 3672.

It is an arithmetic number, because the mean of its divisors is an integer number (274880).

2^1628427 is an apocalyptic number.

1628427 is a deficient number, since it is larger than the sum of its proper divisors (570613).

1628427 is an equidigital number, since it uses as much as digits as its factorization.

1628427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6953.

The product of its digits is 5376, while the sum is 30.

The square root of 1628427 is about 1276.0983504417. The cubic root of 1628427 is about 117.6493227555.

The spelling of 1628427 in words is "one million, six hundred twenty-eight thousand, four hundred twenty-seven".