1405224 has 48 divisors (see below), whose sum is σ = 3942900. Its totient is φ = 451584.

The previous prime is 1405211. The next prime is 1405241. The reversal of 1405224 is 4225041.

1405224 is a `hidden beast` number, since 140 + 522 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1397124 + 8100 = 1182^2 + 90^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1405197 and 1405206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1752 + ... + 2424.

2^1405224 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 1405224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1971450).

1405224 is an abundant number, since it is smaller than the sum of its proper divisors (2537676).

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

1405224 is a wasteful number, since it uses less digits than its factorization.

1405224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1405224 is about 1185.4214440443. The cubic root of 1405224 is about 112.0078650939.

The spelling of 1405224 in words is "one million, four hundred five thousand, two hundred twenty-four".