3887220 has 96 divisors (see below), whose sum is σ = 11950848. Its totient is φ = 940032.

The previous prime is 3887197. The next prime is 3887227. The reversal of 3887220 is 227883.

3887220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3887220² = 30220958656800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3887227) 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 31 ways as a sum of consecutive naturals, for example, 37689 + ... + 37791.

It is an arithmetic number, because the mean of its divisors is an integer number (124488).

Almost surely, 2^3887220 is an apocalyptic number.

3887220 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 3887220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5975424).

3887220 is an abundant number, since it is smaller than the sum of its proper divisors (8063628).

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

3887220 is a wasteful number, since it uses less digits than its factorization.

3887220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 3887220 is about 1971.6034083963. The cubic root of 3887220 is about 157.2339676289.

The spelling of 3887220 in words is "three million, eight hundred eighty-seven thousand, two hundred twenty".