1800048 has 20 divisors (see below), whose sum is σ = 4650248. Its totient is φ = 600000.

The previous prime is 1800047. The next prime is 1800067. The reversal of 1800048 is 8400081.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1799997 and 1800033.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18703 + ... + 18798.

2^1800048 is an apocalyptic number.

It is an amenable number.

1800048 is an abundant number, since it is smaller than the sum of its proper divisors (2850200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1800048 is a wasteful number, since it uses less digits than its factorization.

1800048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37512 (or 37506 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 1800048 is about 1341.6586749244. The cubic root of 1800048 is about 121.6451211822.

The spelling of 1800048 in words is "one million, eight hundred thousand, forty-eight".