3869220 has 48 divisors (see below), whose sum is σ = 11027520. Its totient is φ = 1013376.

The previous prime is 3869213. The next prime is 3869231. The reversal of 3869220 is 229683.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a d-powerful number, because it can be written as 3¹³ + 8 + 6⁶ + 9 + 2¹⁷ + 2²¹ + 0 .

It is a congruent 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, 2994 + ... + 4086.

It is an arithmetic number, because the mean of its divisors is an integer number (229740).

Almost surely, 2^3869220 is an apocalyptic number.

3869220 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 3869220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5513760).

3869220 is an abundant number, since it is smaller than the sum of its proper divisors (7158300).

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

3869220 is a wasteful number, since it uses less digits than its factorization.

3869220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 3869220 is about 1967.0332991589. The cubic root of 3869220 is about 156.9908983594.

The spelling of 3869220 in words is "three million, eight hundred sixty-nine thousand, two hundred twenty".