3854820 has 48 divisors (see below), whose sum is σ = 11063808. Its totient is φ = 1002240.

The previous prime is 3854797. The next prime is 3854827. The reversal of 3854820 is 284583.

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

It is not an unprimeable number, because it can be changed into a prime (3854827) 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, 1677 + ... + 3243.

It is an arithmetic number, because the mean of its divisors is an integer number (230496).

Almost surely, 2^3854820 is an apocalyptic number.

3854820 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 3854820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5531904).

3854820 is an abundant number, since it is smaller than the sum of its proper divisors (7208988).

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

3854820 is a wasteful number, since it uses less digits than its factorization.

3854820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620 (or 1618 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 3854820 is about 1963.3695525805. The cubic root of 3854820 is about 156.7958996047.

The spelling of 3854820 in words is "three million, eight hundred fifty-four thousand, eight hundred twenty".