3838720 has 36 divisors (see below), whose sum is σ = 9198000. Its totient is φ = 1534976.

The previous prime is 3838711. The next prime is 3838729. The reversal of 3838720 is 278383.

It is an interprime number because it is at equal distance from previous prime (3838711) and next prime (3838729).

It is not an unprimeable number, because it can be changed into a prime (3838729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220 + ... + 2779.

It is an arithmetic number, because the mean of its divisors is an integer number (255500).

Almost surely, 2^3838720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3838720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4599000).

3838720 is an abundant number, since it is smaller than the sum of its proper divisors (5359280).

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

3838720 is an equidigital number, since it uses as much as digits as its factorization.

3838720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020 (or 3006 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 3838720 is about 1959.2651683731. The cubic root of 3838720 is about 156.5773043014.

The spelling of 3838720 in words is "three million, eight hundred thirty-eight thousand, seven hundred twenty".