3820620 has 48 divisors (see below), whose sum is σ = 10993248. Its totient is φ = 990720.

The previous prime is 3820603. The next prime is 3820627. The reversal of 3820620 is 260283.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3820627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1360 + ... + 3080.

It is an arithmetic number, because the mean of its divisors is an integer number (229026).

Almost surely, 2^3820620 is an apocalyptic number.

3820620 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 3820620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5496624).

3820620 is an abundant number, since it is smaller than the sum of its proper divisors (7172628).

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

3820620 is a wasteful number, since it uses less digits than its factorization.

3820620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770 (or 1768 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 3820620 is about 1954.6406319321. The cubic root of 3820620 is about 156.3308232521.

It can be divided in two parts, 38206 and 20, that added together give a triangular number (38226 = T₂₇₆).

The spelling of 3820620 in words is "three million, eight hundred twenty thousand, six hundred twenty".