3501540 has 108 divisors (see below), whose sum is σ = 12386556. Its totient is φ = 798336.

The previous prime is 3501503. The next prime is 3501587. The reversal of 3501540 is 451053.

3501540 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1806336 + 1695204 = 1344^2 + 1302^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8622 + ... + 9018.

Almost surely, 2^3501540 is an apocalyptic number.

3501540 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 3501540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6193278).

3501540 is an abundant number, since it is smaller than the sum of its proper divisors (8885016).

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

3501540 is a wasteful number, since it uses less digits than its factorization.

3501540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 3501540 is about 1871.2402304354. The cubic root of 3501540 is about 151.8517136477.

Adding to 3501540 its reverse (451053), we get a palindrome (3952593).

It can be divided in two parts, 3501 and 540, that multiplied together give a triangular number (1890540 = T₁₉₄₄).

The spelling of 3501540 in words is "three million, five hundred one thousand, five hundred forty".