3445440 has 112 divisors (see below), whose sum is σ = 11350752. Its totient is φ = 884736.

The previous prime is 3445411. The next prime is 3445451. The reversal of 3445440 is 445443.

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 3445440.

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, 35472 + ... + 35568.

It is an arithmetic number, because the mean of its divisors is an integer number (101346).

Almost surely, 2^3445440 is an apocalyptic number.

3445440 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 3445440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5675376).

3445440 is an abundant number, since it is smaller than the sum of its proper divisors (7905312).

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

3445440 is a wasteful number, since it uses less digits than its factorization.

3445440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 3445440 is about 1856.1896454835. The cubic root of 3445440 is about 151.0363785280.

The spelling of 3445440 in words is "three million, four hundred forty-five thousand, four hundred forty".