3885720 has 32 divisors (see below), whose sum is σ = 11657520. Its totient is φ = 1036160.

The previous prime is 3885719. The next prime is 3885727. The reversal of 3885720 is 275883.

3885720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3885727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16071 + ... + 16310.

Almost surely, 2^3885720 is an apocalyptic number.

3885720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3885720 is an abundant number, since it is smaller than the sum of its proper divisors (7771800).

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

3885720 is a wasteful number, since it uses less digits than its factorization.

3885720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32395 (or 32391 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 3885720 is about 1971.2229706454. Note that the first 3 decimals coincide. The cubic root of 3885720 is about 157.2137405519.

It can be divided in two parts, 38 and 85720, that added together give a palindrome (85758).

The spelling of 3885720 in words is "three million, eight hundred eighty-five thousand, seven hundred twenty".