3454640 has 80 divisors (see below), whose sum is σ = 9523200. Its totient is φ = 1140480.

The previous prime is 3454631. The next prime is 3454643. The reversal of 3454640 is 464543.

3454640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (3454643) 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 in 15 ways as a sum of consecutive naturals, for example, 17261 + ... + 17459.

It is an arithmetic number, because the mean of its divisors is an integer number (119040).

Almost surely, 2^3454640 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 3454640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4761600).

3454640 is an abundant number, since it is smaller than the sum of its proper divisors (6068560).

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

3454640 is a wasteful number, since it uses less digits than its factorization.

3454640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 3454640 is about 1858.6661884265. Note that the first 3 decimals coincide. The cubic root of 3454640 is about 151.1706912948.

The spelling of 3454640 in words is "three million, four hundred fifty-four thousand, six hundred forty".