1992445 has 32 divisors (see below), whose sum is σ = 3064320. Its totient is φ = 1209600.

The previous prime is 1992439. The next prime is 1992469. The reversal of 1992445 is 5442991.

It is not a de Polignac number, because 1992445 - 2³ = 1992437 is a prime.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1992445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13120 + ... + 13270.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^1992445 is an apocalyptic number.

It is an amenable number.

1992445 is a deficient number, since it is larger than the sum of its proper divisors (1071875).

1992445 is a wasteful number, since it uses less digits than its factorization.

1992445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205.

The product of its digits is 12960, while the sum is 34.

The square root of 1992445 is about 1411.5399392153. The cubic root of 1992445 is about 125.8332597498.

The spelling of 1992445 in words is "one million, nine hundred ninety-two thousand, four hundred forty-five".