3821730 has 64 divisors (see below), whose sum is σ = 10309248. Its totient is φ = 898560.

The previous prime is 3821729. The next prime is 3821731. The reversal of 3821730 is 371283.

It is an interprime number because it is at equal distance from previous prime (3821729) and next prime (3821731).

It is a self number, because there is not a number n which added to its sum of digits gives 3821730.

It is not an unprimeable number, because it can be changed into a prime (3821731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12054 + ... + 12366.

It is an arithmetic number, because the mean of its divisors is an integer number (161082).

Almost surely, 2^3821730 is an apocalyptic number.

3821730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3821730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5154624).

3821730 is an abundant number, since it is smaller than the sum of its proper divisors (6487518).

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

3821730 is a wasteful number, since it uses less digits than its factorization.

3821730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 3821730 is about 1954.9245509738. The cubic root of 3821730 is about 156.3459613197.

It can be divided in two parts, 382 and 1730, that added together give a palindrome (2112).

The spelling of 3821730 in words is "three million, eight hundred twenty-one thousand, seven hundred thirty".