1704040 has 64 divisors (see below), whose sum is σ = 4309200. Its totient is φ = 602112.

The previous prime is 1704023. The next prime is 1704041. The reversal of 1704040 is 404071.

1704040 = 28² + 29² + ... + 172².

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 70756 + 1633284 = 266^2 + 1278^2 .

It is not an unprimeable number, because it can be changed into a prime (1704041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15024 + ... + 15136.

2^1704040 is an apocalyptic number.

1704040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1704040 is the 754-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1704040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2154600).

1704040 is an abundant number, since it is smaller than the sum of its proper divisors (2605160).

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

1704040 is a wasteful number, since it uses less digits than its factorization.

1704040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 1704040 is about 1305.3888309619. The cubic root of 1704040 is about 119.4427869890.

The spelling of 1704040 in words is "one million, seven hundred four thousand, forty".