1800272 has 20 divisors (see below), whose sum is σ = 3583476. Its totient is φ = 875520.

The previous prime is 1800259. The next prime is 1800277. The reversal of 1800272 is 2720081.

It can be written as a sum of positive squares in 2 ways, for example, as 1700416 + 99856 = 1304^2 + 316^2 .

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800277) 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, 929 + ... + 2112.

2^1800272 is an apocalyptic number.

It is an amenable number.

1800272 is a deficient number, since it is larger than the sum of its proper divisors (1783204).

1800272 is a wasteful number, since it uses less digits than its factorization.

1800272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3086 (or 3080 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1800272 is about 1341.7421510857. The cubic root of 1800272 is about 121.6501668582.

The spelling of 1800272 in words is "one million, eight hundred thousand, two hundred seventy-two".