3500816 has 20 divisors (see below), whose sum is σ = 7399824. Its totient is φ = 1591200.

The previous prime is 3500803. The next prime is 3500831. The reversal of 3500816 is 6180053.

It is a junction number, because it is equal to n+sod(n) for n = 3500791 and 3500800.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9770 + ... + 10121.

Almost surely, 2^3500816 is an apocalyptic number.

It is an amenable number.

3500816 is an abundant number, since it is smaller than the sum of its proper divisors (3899008).

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

3500816 is a wasteful number, since it uses less digits than its factorization.

3500816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19910 (or 19904 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 3500816 is about 1871.0467658506. The cubic root of 3500816 is about 151.8412469941.

Adding to 3500816 its reverse (6180053), we get a palindrome (9680869).

The spelling of 3500816 in words is "three million, five hundred thousand, eight hundred sixteen".