1992888 has 48 divisors (see below), whose sum is σ = 5475600. Its totient is φ = 654720.

The previous prime is 1992883. The next prime is 1992889. The reversal of 1992888 is 8882991.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992883) 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 11 ways as a sum of consecutive naturals, for example, 6253 + ... + 6563.

It is an arithmetic number, because the mean of its divisors is an integer number (114075).

2^1992888 is an apocalyptic number.

1992888 is a gapful number since it is divisible by the number (18) 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 1992888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2737800).

1992888 is an abundant number, since it is smaller than the sum of its proper divisors (3482712).

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

1992888 is a wasteful number, since it uses less digits than its factorization.

1992888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 405 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 1992888 is about 1411.6968513105. The cubic root of 1992888 is about 125.8425849763.

The spelling of 1992888 in words is "one million, nine hundred ninety-two thousand, eight hundred eighty-eight".