1504406 has 4 divisors (see below), whose sum is σ = 2256612. Its totient is φ = 752202.

The previous prime is 1504379. The next prime is 1504409. The reversal of 1504406 is 6044051.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6044051 = 13 ⋅464927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1504409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 376100 + ... + 376103.

It is an arithmetic number, because the mean of its divisors is an integer number (564153).

2^1504406 is an apocalyptic number.

1504406 is a deficient number, since it is larger than the sum of its proper divisors (752206).

1504406 is an equidigital number, since it uses as much as digits as its factorization.

1504406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752205.

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

The square root of 1504406 is about 1226.5422944196. The cubic root of 1504406 is about 114.5833949384.

Adding to 1504406 its reverse (6044051), we get a palindrome (7548457).

The spelling of 1504406 in words is "one million, five hundred four thousand, four hundred six".