1920856 has 16 divisors (see below), whose sum is σ = 4116240. Its totient is φ = 823200.

The previous prime is 1920851. The next prime is 1920859. The reversal of 1920856 is 6580291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17095 + ... + 17206.

It is an arithmetic number, because the mean of its divisors is an integer number (257265).

2^1920856 is an apocalyptic number.

It is an amenable number.

1920856 is an abundant number, since it is smaller than the sum of its proper divisors (2195384).

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

1920856 is a wasteful number, since it uses less digits than its factorization.

1920856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34314 (or 34310 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1920856 is about 1385.9494940293. The cubic root of 1920856 is about 124.3077682649.

The spelling of 1920856 in words is "one million, nine hundred twenty thousand, eight hundred fifty-six".