1405488 has 80 divisors (see below), whose sum is σ = 4285440. Its totient is φ = 388608.

The previous prime is 1405477. The next prime is 1405493. The reversal of 1405488 is 8845041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15748 + ... + 15836.

It is an arithmetic number, because the mean of its divisors is an integer number (53568).

2^1405488 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 1405488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2142720).

1405488 is an abundant number, since it is smaller than the sum of its proper divisors (2879952).

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

1405488 is a wasteful number, since it uses less digits than its factorization.

1405488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 1405488 is about 1185.5327916173. The cubic root of 1405488 is about 112.0148789757.

The spelling of 1405488 in words is "one million, four hundred five thousand, four hundred eighty-eight".