1491424 has 48 divisors (see below), whose sum is σ = 3386880. Its totient is φ = 639360.

The previous prime is 1491421. The next prime is 1491437. The reversal of 1491424 is 4241941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491421) 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, 6577 + ... + 6799.

It is an arithmetic number, because the mean of its divisors is an integer number (70560).

2^1491424 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 1491424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1693440).

1491424 is an abundant number, since it is smaller than the sum of its proper divisors (1895456).

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

1491424 is a wasteful number, since it uses less digits than its factorization.

1491424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 255 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 1491424 is about 1221.2387154033. The cubic root of 1491424 is about 114.2528500742.

The spelling of 1491424 in words is "one million, four hundred ninety-one thousand, four hundred twenty-four".