1291956 has 48 divisors (see below), whose sum is σ = 3268608. Its totient is φ = 396000.

The previous prime is 1291931. The next prime is 1291957. The reversal of 1291956 is 6591921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8481 + ... + 8631.

It is an arithmetic number, because the mean of its divisors is an integer number (68096).

2^1291956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1291956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1634304).

1291956 is an abundant number, since it is smaller than the sum of its proper divisors (1976652).

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

1291956 is a wasteful number, since it uses less digits than its factorization.

1291956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 210 counting only the distinct ones).

The product of its digits is 4860, while the sum is 33.

The square root of 1291956 is about 1136.6424239839. The cubic root of 1291956 is about 108.9137156280.

The spelling of 1291956 in words is "one million, two hundred ninety-one thousand, nine hundred fifty-six".