3502220 has 24 divisors (see below), whose sum is σ = 7535808. Its totient is φ = 1366400.

The previous prime is 3502207. The next prime is 3502231. The reversal of 3502220 is 222053.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3502195 and 3502204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316 + ... + 2955.

It is an arithmetic number, because the mean of its divisors is an integer number (313992).

Almost surely, 2^3502220 is an apocalyptic number.

It is an amenable number.

3502220 is an abundant number, since it is smaller than the sum of its proper divisors (4033588).

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

3502220 is a wasteful number, since it uses less digits than its factorization.

3502220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321 (or 4319 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 3502220 is about 1871.4219192902. The cubic root of 3502220 is about 151.8615428925.

Adding to 3502220 its reverse (222053), we get a palindrome (3724273).

The spelling of 3502220 in words is "three million, five hundred two thousand, two hundred twenty".