1800452 has 6 divisors (see below), whose sum is σ = 3150798. Its totient is φ = 900224.

The previous prime is 1800451. The next prime is 1800473. The reversal of 1800452 is 2540081.

It can be written as a sum of positive squares in only one way, i.e., 1359556 + 440896 = 1166^2 + 664^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1800451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225053 + ... + 225060.

It is an arithmetic number, because the mean of its divisors is an integer number (525133).

2^1800452 is an apocalyptic number.

It is an amenable number.

1800452 is a deficient number, since it is larger than the sum of its proper divisors (1350346).

1800452 is a wasteful number, since it uses less digits than its factorization.

1800452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450117 (or 450115 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1800452 is about 1341.8092263806. The cubic root of 1800452 is about 121.6542211160.

The spelling of 1800452 in words is "one million, eight hundred thousand, four hundred fifty-two".