1856002 has 4 divisors (see below), whose sum is σ = 2784006. Its totient is φ = 928000.

The previous prime is 1855999. The next prime is 1856003. The reversal of 1856002 is 2006581.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1661521 + 194481 = 1289^2 + 441^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1856003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 463999 + ... + 464002.

2^1856002 is an apocalyptic number.

1856002 is a deficient number, since it is larger than the sum of its proper divisors (928004).

1856002 is an equidigital number, since it uses as much as digits as its factorization.

1856002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928003.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1856002 is about 1362.3516432992. The cubic root of 1856002 is about 122.8927171699.

The spelling of 1856002 in words is "one million, eight hundred fifty-six thousand, two".