1997192 has 16 divisors (see below), whose sum is σ = 3836700. Its totient is φ = 974080.

The previous prime is 1997189. The next prime is 1997213. The reversal of 1997192 is 2917991.

It can be written as a sum of positive squares in 2 ways, for example, as 1653796 + 343396 = 1286^2 + 586^2 .

It is a plaindrome in base 11.

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 in 3 ways as a sum of consecutive naturals, for example, 2717 + ... + 3372.

2^1997192 is an apocalyptic number.

It is an amenable number.

1997192 is a deficient number, since it is larger than the sum of its proper divisors (1839508).

1997192 is a wasteful number, since it uses less digits than its factorization.

1997192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6136 (or 6132 counting only the distinct ones).

The product of its digits is 10206, while the sum is 38.

The square root of 1997192 is about 1413.2204357424. The cubic root of 1997192 is about 125.9331130675.

The spelling of 1997192 in words is "one million, nine hundred ninety-seven thousand, one hundred ninety-two".