1404064 has 48 divisors (see below), whose sum is σ = 3061800. Its totient is φ = 630784.

The previous prime is 1404061. The next prime is 1404071. The reversal of 1404064 is 4604041.

It can be written as a sum of positive squares in 4 ways, for example, as 1192464 + 211600 = 1092^2 + 460^2 .

It is not an unprimeable number, because it can be changed into a prime (1404061) 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, 15732 + ... + 15820.

2^1404064 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 1404064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530900).

1404064 is an abundant number, since it is smaller than the sum of its proper divisors (1657736).

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

1404064 is a wasteful number, since it uses less digits than its factorization.

1404064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1404064 is about 1184.9320655633. The cubic root of 1404064 is about 111.9770361083.

The spelling of 1404064 in words is "one million, four hundred four thousand, sixty-four".