1992000 has 112 divisors (see below), whose sum is σ = 6656832. Its totient is φ = 524800.

The previous prime is 1991999. The next prime is 1992031. The reversal of 1992000 is 2991.

It is a happy number.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23959 + ... + 24041.

It is an arithmetic number, because the mean of its divisors is an integer number (59436).

2^1992000 is an apocalyptic number.

1992000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1992000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3328416).

1992000 is an abundant number, since it is smaller than the sum of its proper divisors (4664832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1992000 is an equidigital number, since it uses as much as digits as its factorization.

1992000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1992000 is about 1411.3823011502. The cubic root of 1992000 is about 125.8238910311.

Adding to 1992000 its reverse (2991), we get a palindrome (1994991).

The spelling of 1992000 in words is "one million, nine hundred ninety-two thousand".