3478240 has 24 divisors (see below), whose sum is σ = 8217720. Its totient is φ = 1391232.

The previous prime is 3478229. The next prime is 3478243. The reversal of 3478240 is 428743.

It is a junction number, because it is equal to n+sod(n) for n = 3478199 and 3478208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3478243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10710 + ... + 11029.

It is an arithmetic number, because the mean of its divisors is an integer number (342405).

Almost surely, 2^3478240 is an apocalyptic number.

It is an amenable number.

3478240 is an abundant number, since it is smaller than the sum of its proper divisors (4739480).

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

3478240 is a wasteful number, since it uses less digits than its factorization.

3478240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21754 (or 21746 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 3478240 is about 1865.0040214434. The cubic root of 3478240 is about 151.5141458034.

The spelling of 3478240 in words is "three million, four hundred seventy-eight thousand, two hundred forty".