3333840 has 80 divisors (see below), whose sum is σ = 10713600. Its totient is φ = 856576.

The previous prime is 3333823. The next prime is 3333893. The reversal of 3333840 is 483333.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×3333840² = 22228978291200, which contains 22 as substring.

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 3333840.

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, 6721 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (133920).

Almost surely, 2^3333840 is an apocalyptic number.

3333840 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 3333840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5356800).

3333840 is an abundant number, since it is smaller than the sum of its proper divisors (7379760).

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

3333840 is a wasteful number, since it uses less digits than its factorization.

3333840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 3333840 is about 1825.8806094594. The cubic root of 3333840 is about 149.3877264298.

The spelling of 3333840 in words is "three million, three hundred thirty-three thousand, eight hundred forty".