3620220 has 24 divisors (see below), whose sum is σ = 10136784. Its totient is φ = 965376.

The previous prime is 3620209. The next prime is 3620231. The reversal of 3620220 is 220263.

It is an interprime number because it is at equal distance from previous prime (3620209) and next prime (3620231).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3620220.

It is a congruent number.

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, 30109 + ... + 30228.

It is an arithmetic number, because the mean of its divisors is an integer number (422366).

Almost surely, 2^3620220 is an apocalyptic number.

3620220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3620220 is an abundant number, since it is smaller than the sum of its proper divisors (6516564).

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

3620220 is a wasteful number, since it uses less digits than its factorization.

3620220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60349 (or 60347 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 3620220 is about 1902.6875728821. The cubic root of 3620220 is about 153.5482912424.

Adding to 3620220 its reverse (220263), we get a palindrome (3840483).

The spelling of 3620220 in words is "three million, six hundred twenty thousand, two hundred twenty".