1291472 has 40 divisors (see below), whose sum is σ = 3083136. Its totient is φ = 510336.

The previous prime is 1291471. The next prime is 1291481. The reversal of 1291472 is 2741921.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013 + ... + 1899.

2^1291472 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 1291472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1541568).

1291472 is an abundant number, since it is smaller than the sum of its proper divisors (1791664).

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

1291472 is a wasteful number, since it uses less digits than its factorization.

1291472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915 (or 909 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 1291472 is about 1136.4294962733. The cubic root of 1291472 is about 108.9001133014.

The spelling of 1291472 in words is "one million, two hundred ninety-one thousand, four hundred seventy-two".