1827397 has 12 divisors (see below), whose sum is σ = 2160864. Its totient is φ = 1531920.

The previous prime is 1827389. The next prime is 1827421. The reversal of 1827397 is 7937281.

It is not a de Polignac number, because 1827397 - 2³ = 1827389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1827307) 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 in 11 ways as a sum of consecutive naturals, for example, 1368 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (180072).

2^1827397 is an apocalyptic number.

It is an amenable number.

1827397 is a deficient number, since it is larger than the sum of its proper divisors (333467).

1827397 is a wasteful number, since it uses less digits than its factorization.

1827397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020 (or 1007 counting only the distinct ones).

The product of its digits is 21168, while the sum is 37.

The square root of 1827397 is about 1351.8124869966. The cubic root of 1827397 is about 122.2580982225.

The spelling of 1827397 in words is "one million, eight hundred twenty-seven thousand, three hundred ninety-seven".