1828623 has 4 divisors (see below), whose sum is σ = 2438168. Its totient is φ = 1219080.

The previous prime is 1828609. The next prime is 1828627. The reversal of 1828623 is 3268281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3268281 = 3 ⋅1089427.

It is not a de Polignac number, because 1828623 - 2⁵ = 1828591 is a prime.

It is a super-2 number, since 2×1828623² = 6687724152258, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1828627) 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, 304768 + ... + 304773.

It is an arithmetic number, because the mean of its divisors is an integer number (609542).

2^1828623 is an apocalyptic number.

1828623 is a deficient number, since it is larger than the sum of its proper divisors (609545).

1828623 is an equidigital number, since it uses as much as digits as its factorization.

1828623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609544.

The product of its digits is 4608, while the sum is 30.

The square root of 1828623 is about 1352.2658762241. The cubic root of 1828623 is about 122.2854330820.

The spelling of 1828623 in words is "one million, eight hundred twenty-eight thousand, six hundred twenty-three".