3344640 has 144 divisors (see below), whose sum is σ = 11675328. Its totient is φ = 811008.

The previous prime is 3344633. The next prime is 3344647. The reversal of 3344640 is 464433.

It is an interprime number because it is at equal distance from previous prime (3344633) and next prime (3344647).

It is a super-2 number, since 2×3344640² = 22373233459200, which contains 22 as substring.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3344640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3344647) 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, 49887 + ... + 49953.

Almost surely, 2^3344640 is an apocalyptic number.

3344640 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 3344640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5837664).

3344640 is an abundant number, since it is smaller than the sum of its proper divisors (8330688).

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

3344640 is a wasteful number, since it uses less digits than its factorization.

3344640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 3344640 is about 1828.8356951897. The cubic root of 3344640 is about 149.5488667745.

The spelling of 3344640 in words is "three million, three hundred forty-four thousand, six hundred forty".