3478840 has 32 divisors (see below), whose sum is σ = 8100000. Its totient is φ = 1343104.

The previous prime is 3478831. The next prime is 3478847. The reversal of 3478840 is 488743.

It is a junction number, because it is equal to n+sod(n) for n = 3478796 and 3478805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3478847) 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, 340 + ... + 2659.

It is an arithmetic number, because the mean of its divisors is an integer number (253125).

Almost surely, 2^3478840 is an apocalyptic number.

It is an amenable number.

3478840 is an abundant number, since it is smaller than the sum of its proper divisors (4621160).

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

3478840 is a wasteful number, since it uses less digits than its factorization.

3478840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039 (or 3035 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 3478840 is about 1865.1648720690. The cubic root of 3478840 is about 151.5228574182.

The spelling of 3478840 in words is "three million, four hundred seventy-eight thousand, eight hundred forty".