1956440 has 32 divisors (see below), whose sum is σ = 4482000. Its totient is φ = 768384.

The previous prime is 1956439. The next prime is 1956481. The reversal of 1956440 is 446591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946 + ... + 2774.

2^1956440 is an apocalyptic number.

1956440 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 1956440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2241000).

1956440 is an abundant number, since it is smaller than the sum of its proper divisors (2525560).

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

1956440 is a wasteful number, since it uses less digits than its factorization.

1956440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1956440 is about 1398.7279935713. The cubic root of 1956440 is about 125.0706800271.

The spelling of 1956440 in words is "one million, nine hundred fifty-six thousand, four hundred forty".