1956816 has 60 divisors (see below), whose sum is σ = 5571072. Its totient is φ = 641088.

The previous prime is 1956811. The next prime is 1956839. The reversal of 1956816 is 6186591.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15345 + ... + 15471.

2^1956816 is an apocalyptic number.

1956816 is a gapful number since it is divisible by the number (16) 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 1956816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2785536).

1956816 is an abundant number, since it is smaller than the sum of its proper divisors (3614256).

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

1956816 is a wasteful number, since it uses less digits than its factorization.

1956816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 239 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1956816 is about 1398.8623949481. The cubic root of 1956816 is about 125.0786917838.

It can be divided in two parts, 1956 and 816, that added together give a palindrome (2772).

The spelling of 1956816 in words is "one million, nine hundred fifty-six thousand, eight hundred sixteen".