1628463 has 4 divisors (see below), whose sum is σ = 2171288. Its totient is φ = 1085640.

The previous prime is 1628441. The next prime is 1628467. The reversal of 1628463 is 3648261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3648261 = 3 ⋅1216087.

It is not a de Polignac number, because 1628463 - 2¹³ = 1620271 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1628463.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 271408 + ... + 271413.

It is an arithmetic number, because the mean of its divisors is an integer number (542822).

2^1628463 is an apocalyptic number.

1628463 is a deficient number, since it is larger than the sum of its proper divisors (542825).

1628463 is an equidigital number, since it uses as much as digits as its factorization.

1628463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542824.

The product of its digits is 6912, while the sum is 30.

The square root of 1628463 is about 1276.1124558596. The cubic root of 1628463 is about 117.6501897157.

The spelling of 1628463 in words is "one million, six hundred twenty-eight thousand, four hundred sixty-three".