1800772 has 6 divisors (see below), whose sum is σ = 3151358. Its totient is φ = 900384.

The previous prime is 1800767. The next prime is 1800787. The reversal of 1800772 is 2770081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1784896 + 15876 = 1336^2 + 126^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225093 + ... + 225100.

2^1800772 is an apocalyptic number.

It is an amenable number.

1800772 is a deficient number, since it is larger than the sum of its proper divisors (1350586).

1800772 is a wasteful number, since it uses less digits than its factorization.

1800772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450197 (or 450195 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 1800772 is about 1341.9284630710. The cubic root of 1800772 is about 121.6614280182.

The spelling of 1800772 in words is "one million, eight hundred thousand, seven hundred seventy-two".