1431872 has 28 divisors (see below), whose sum is σ = 3061716. Its totient is φ = 660480.

The previous prime is 1431869. The next prime is 1431907. The reversal of 1431872 is 2781341.

It can be written as a sum of positive squares in 2 ways, for example, as 614656 + 817216 = 784^2 + 904^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29 + ... + 1692.

It is an arithmetic number, because the mean of its divisors is an integer number (109347).

2^1431872 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 1431872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530858).

1431872 is an abundant number, since it is smaller than the sum of its proper divisors (1629844).

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

1431872 is a wasteful number, since it uses less digits than its factorization.

1431872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 1736 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 1431872 is about 1196.6085408353. The cubic root of 1431872 is about 112.7114574350.

The spelling of 1431872 in words is "one million, four hundred thirty-one thousand, eight hundred seventy-two".