3551840 has 48 divisors (see below), whose sum is σ = 8527680. Its totient is φ = 1397760.

The previous prime is 3551839. The next prime is 3551851. The reversal of 3551840 is 481553.

3551840 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12500 + ... + 12780.

It is an arithmetic number, because the mean of its divisors is an integer number (177660).

Almost surely, 2^3551840 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 3551840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4263840).

3551840 is an abundant number, since it is smaller than the sum of its proper divisors (4975840).

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

3551840 is a wasteful number, since it uses less digits than its factorization.

3551840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 3551840 is about 1884.6325901883. The cubic root of 3551840 is about 152.5753815266.

The spelling of 3551840 in words is "three million, five hundred fifty-one thousand, eight hundred forty".