3423840 has 96 divisors (see below), whose sum is σ = 12337920. Its totient is φ = 781824.

The previous prime is 3423839. The next prime is 3423859. The reversal of 3423840 is 483243.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3423840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2851 + ... + 3869.

It is an arithmetic number, because the mean of its divisors is an integer number (128520).

Almost surely, 2^3423840 is an apocalyptic number.

3423840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3423840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6168960).

3423840 is an abundant number, since it is smaller than the sum of its proper divisors (8914080).

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

3423840 is a wasteful number, since it uses less digits than its factorization.

3423840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 3423840 is about 1850.3621267201. The cubic root of 3423840 is about 150.7200931297.

The spelling of 3423840 in words is "three million, four hundred twenty-three thousand, eight hundred forty".