1609104 has 40 divisors (see below), whose sum is σ = 4751680. Its totient is φ = 459648.

The previous prime is 1609099. The next prime is 1609109. The reversal of 1609104 is 4019061.

It is an interprime number because it is at equal distance from previous prime (1609099) and next prime (1609109).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1609109) 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, 2059 + ... + 2730.

It is an arithmetic number, because the mean of its divisors is an integer number (118792).

2^1609104 is an apocalyptic number.

1609104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1609104 is an abundant number, since it is smaller than the sum of its proper divisors (3142576).

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

1609104 is a wasteful number, since it uses less digits than its factorization.

1609104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4807 (or 4801 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1609104 is about 1268.5046314460. The cubic root of 1609104 is about 117.1821255846.

The spelling of 1609104 in words is "one million, six hundred nine thousand, one hundred four".