3534840 has 80 divisors (see below), whose sum is σ = 11891880. Its totient is φ = 941760.

The previous prime is 3534829. The next prime is 3534841. The reversal of 3534840 is 484353.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3534841) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2695 + ... + 3785.

Almost surely, 2^3534840 is an apocalyptic number.

3534840 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 3534840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5945940).

3534840 is an abundant number, since it is smaller than the sum of its proper divisors (8357040).

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

3534840 is a wasteful number, since it uses less digits than its factorization.

3534840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 3534840 is about 1880.1170176348. The cubic root of 3534840 is about 152.3315707423.

The spelling of 3534840 in words is "three million, five hundred thirty-four thousand, eight hundred forty".