1992128 has 28 divisors (see below), whose sum is σ = 4187952. Its totient is φ = 936960.

The previous prime is 1992119. The next prime is 1992139. The reversal of 1992128 is 8212991.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 1992094 and 1992103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173 + ... + 2003.

2^1992128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1992128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2093976).

1992128 is an abundant number, since it is smaller than the sum of its proper divisors (2195824).

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

1992128 is a wasteful number, since it uses less digits than its factorization.

1992128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860 (or 1850 counting only the distinct ones).

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

The square root of 1992128 is about 1411.4276460379. The cubic root of 1992128 is about 125.8265859965.

The spelling of 1992128 in words is "one million, nine hundred ninety-two thousand, one hundred twenty-eight".