1406504 has 24 divisors (see below), whose sum is σ = 2900730. Its totient is φ = 638880.

The previous prime is 1406497. The next prime is 1406521. The reversal of 1406504 is 4056041.

1406504 = 42² + 43² + ... + 162².

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 813604 + 592900 = 902^2 + 770^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242 + ... + 1694.

2^1406504 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 1406504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1450365).

1406504 is an abundant number, since it is smaller than the sum of its proper divisors (1494226).

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

1406504 is a wasteful number, since it uses less digits than its factorization.

1406504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481 (or 1466 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1406504 is about 1185.9612135310. The cubic root of 1406504 is about 112.0418636019.

The spelling of 1406504 in words is "one million, four hundred six thousand, five hundred four".