1872112 has 30 divisors (see below), whose sum is σ = 3991064. Its totient is φ = 850080.

The previous prime is 1872109. The next prime is 1872113. The reversal of 1872112 is 2112781.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1453 + ... + 2419.

2^1872112 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 1872112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1995532).

1872112 is an abundant number, since it is smaller than the sum of its proper divisors (2118952).

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

1872112 is a wasteful number, since it uses less digits than its factorization.

1872112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997 (or 980 counting only the distinct ones).

The product of its digits is 224, while the sum is 22.

The square root of 1872112 is about 1368.2514388810. The cubic root of 1872112 is about 123.2472607795.

Adding to 1872112 its reverse (2112781), we get a palindrome (3984893).

The spelling of 1872112 in words is "one million, eight hundred seventy-two thousand, one hundred twelve".