3540840 has 64 divisors (see below), whose sum is σ = 11188800. Its totient is φ = 893952.

The previous prime is 3540829. The next prime is 3540893. The reversal of 3540840 is 480453.

It is a happy number.

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 3540840.

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, 1504 + ... + 3056.

It is an arithmetic number, because the mean of its divisors is an integer number (174825).

Almost surely, 2^3540840 is an apocalyptic number.

3540840 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 3540840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5594400).

3540840 is an abundant number, since it is smaller than the sum of its proper divisors (7647960).

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

3540840 is a wasteful number, since it uses less digits than its factorization.

3540840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586 (or 1582 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 3540840 is about 1881.7119864634. The cubic root of 3540840 is about 152.4177106883.

The spelling of 3540840 in words is "three million, five hundred forty thousand, eight hundred forty".