1805372 has 6 divisors (see below), whose sum is σ = 3159408. Its totient is φ = 902684.

The previous prime is 1805371. The next prime is 1805381. The reversal of 1805372 is 2735081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1805371) by changing a digit.

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, 225668 + ... + 225675.

It is an arithmetic number, because the mean of its divisors is an integer number (526568).

2^1805372 is an apocalyptic number.

It is an amenable number.

1805372 is a deficient number, since it is larger than the sum of its proper divisors (1354036).

1805372 is a wasteful number, since it uses less digits than its factorization.

1805372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451347 (or 451345 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1805372 is about 1343.6413211866. The cubic root of 1805372 is about 121.7649330179.

The spelling of 1805372 in words is "one million, eight hundred five thousand, three hundred seventy-two".