3534520 has 64 divisors (see below), whose sum is σ = 9007200. Its totient is φ = 1236480.

The previous prime is 3534497. The next prime is 3534529. The reversal of 3534520 is 254353.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3534491 and 3534500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3534529) 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, 12622 + ... + 12898.

Almost surely, 2^3534520 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 3534520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4503600).

3534520 is an abundant number, since it is smaller than the sum of its proper divisors (5472680).

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

3534520 is a wasteful number, since it uses less digits than its factorization.

3534520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 3534520 is about 1880.0319146227. The cubic root of 3534520 is about 152.3269738748.

Adding to 3534520 its reverse (254353), we get a palindrome (3788873).

The spelling of 3534520 in words is "three million, five hundred thirty-four thousand, five hundred twenty".