1906940 has 48 divisors (see below), whose sum is σ = 4681152. Its totient is φ = 638976.

The previous prime is 1906909. The next prime is 1906963. The reversal of 1906940 is 496091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7292 + ... + 7548.

It is an arithmetic number, because the mean of its divisors is an integer number (97524).

2^1906940 is an apocalyptic number.

1906940 is a gapful number since it is divisible by the number (10) 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 1906940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2340576).

1906940 is an abundant number, since it is smaller than the sum of its proper divisors (2774212).

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

1906940 is a wasteful number, since it uses less digits than its factorization.

1906940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1906940 is about 1380.9199831996. The cubic root of 1906940 is about 124.0068501245.

The spelling of 1906940 in words is "one million, nine hundred six thousand, nine hundred forty".