1405304 has 8 divisors (see below), whose sum is σ = 2634960. Its totient is φ = 702648.

The previous prime is 1405289. The next prime is 1405309. The reversal of 1405304 is 4035041.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87824 + ... + 87839.

It is an arithmetic number, because the mean of its divisors is an integer number (329370).

2^1405304 is an apocalyptic number.

It is an amenable number.

1405304 is a deficient number, since it is larger than the sum of its proper divisors (1229656).

1405304 is a wasteful number, since it uses less digits than its factorization.

1405304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175669 (or 175665 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1405304 is about 1185.4551868375. The cubic root of 1405304 is about 112.0099906054.

The spelling of 1405304 in words is "one million, four hundred five thousand, three hundred four".