1828642 has 4 divisors (see below), whose sum is σ = 2742966. Its totient is φ = 914320.

The previous prime is 1828637. The next prime is 1828649. The reversal of 1828642 is 2468281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2468281 = 17 ⋅145193.

It can be written as a sum of positive squares in only one way, i.e., 1792921 + 35721 = 1339^2 + 189^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1828649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457159 + ... + 457162.

2^1828642 is an apocalyptic number.

1828642 is a deficient number, since it is larger than the sum of its proper divisors (914324).

1828642 is an equidigital number, since it uses as much as digits as its factorization.

1828642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914323.

The product of its digits is 6144, while the sum is 31.

The square root of 1828642 is about 1352.2729014515. The cubic root of 1828642 is about 122.2858566093.

The spelling of 1828642 in words is "one million, eight hundred twenty-eight thousand, six hundred forty-two".