1888992 has 72 divisors (see below), whose sum is σ = 6145776. Its totient is φ = 539136.

The previous prime is 1888981. The next prime is 1889009. The reversal of 1888992 is 2998881.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1548 + ... + 2484.

It is an arithmetic number, because the mean of its divisors is an integer number (85358).

2^1888992 is an apocalyptic number.

1888992 is a gapful number since it is divisible by the number (12) 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 1888992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3072888).

1888992 is an abundant number, since it is smaller than the sum of its proper divisors (4256784).

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

1888992 is a wasteful number, since it uses less digits than its factorization.

1888992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 949 counting only the distinct ones).

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

The square root of 1888992 is about 1374.4060535373. The cubic root of 1888992 is about 123.6165748972.

It can be divided in two parts, 18889 and 92, that added together give a palindrome (18981).

The spelling of 1888992 in words is "one million, eight hundred eighty-eight thousand, nine hundred ninety-two".