3502506 has 32 divisors (see below), whose sum is σ = 8104320. Its totient is φ = 988416.

The previous prime is 3502489. The next prime is 3502511. The reversal of 3502506 is 6052053.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a Curzon number.

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, 3270 + ... + 4206.

It is an arithmetic number, because the mean of its divisors is an integer number (253260).

Almost surely, 2^3502506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3502506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4052160).

3502506 is an abundant number, since it is smaller than the sum of its proper divisors (4601814).

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

3502506 is a wasteful number, since it uses less digits than its factorization.

3502506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 3502506 is about 1871.4983302157. The cubic root of 3502506 is about 151.8656765771.

Adding to 3502506 its reverse (6052053), we get a palindrome (9554559).

The spelling of 3502506 in words is "three million, five hundred two thousand, five hundred six".