It is a congruent number.
21906872 is an apocalyptic number.
1906872 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 1906872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2695680).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1906872 is a wasteful number, since it uses less digits than its factorization.
1906872 is an evil number, because the sum of its binary digits is even.
The square root of 1906872 is about 1380.8953617128. The cubic root of 1906872 is about 124.0053761110.
The spelling of 1906872 in words is "one million, nine hundred six thousand, eight hundred seventy-two".