3442840 has 64 divisors (see below), whose sum is σ = 8436960. Its totient is φ = 1259520.

The previous prime is 3442807. The next prime is 3442841. The reversal of 3442840 is 482443.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3442841) 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, 41439 + ... + 41521.

Almost surely, 2^3442840 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 3442840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4218480).

3442840 is an abundant number, since it is smaller than the sum of its proper divisors (4994120).

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

3442840 is a wasteful number, since it uses less digits than its factorization.

3442840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 3442840 is about 1855.4891538352. The cubic root of 3442840 is about 150.9983772467.

The spelling of 3442840 in words is "three million, four hundred forty-two thousand, eight hundred forty".