1992812 has 12 divisors (see below), whose sum is σ = 3639216. Its totient is φ = 953040.

The previous prime is 1992803. The next prime is 1992817. The reversal of 1992812 is 2182991.

It is a happy number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1992817) 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 3 ways as a sum of consecutive naturals, for example, 10739 + ... + 10922.

It is an arithmetic number, because the mean of its divisors is an integer number (303268).

2^1992812 is an apocalyptic number.

It is an amenable number.

1992812 is a deficient number, since it is larger than the sum of its proper divisors (1646404).

1992812 is a wasteful number, since it uses less digits than its factorization.

1992812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21688 (or 21686 counting only the distinct ones).

The product of its digits is 2592, while the sum is 32.

The square root of 1992812 is about 1411.6699330934. The cubic root of 1992812 is about 125.8409852614.

The spelling of 1992812 in words is "one million, nine hundred ninety-two thousand, eight hundred twelve".