2405704 has 72 divisors (see below), whose sum is σ = 5863590.
Its totient is φ = 919296.
The previous prime is 2405701. The next prime is 2405707. The reversal of 2405704 is 4075042.
It is an interprime number because it is at equal distance from previous prime (2405701) and next prime (2405707).
It can be written as a sum of positive squares in only one way, i.e., 1768900 + 636804 = 1330^2 + 798^2
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2405701) by changing a digit.
It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 126607 + ... + 126625.
22405704 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 2405704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2931795).
2405704 is an abundant number, since it is smaller than the sum of its proper divisors (3457886).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2405704 is a wasteful number, since it uses less digits than its factorization.
2405704 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 75 (or 45 counting only the distinct ones).
The product of its (nonzero) digits is 1120, while the sum is 22.
The square root of 2405704 is about 1551.0332040288.
The cubic root of 2405704 is about 133.9925740297.
The spelling of 2405704 in words is "two million, four hundred five thousand, seven hundred four".