4380012 has 108 divisors (see below), whose sum is σ = 13942656. Its totient is φ = 1149120.

The previous prime is 4380001. The next prime is 4380017. The reversal of 4380012 is 2100834.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (4380017) 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 35 ways as a sum of consecutive naturals, for example, 22837 + ... + 23027.

Almost surely, 2^4380012 is an apocalyptic number.

4380012 is a gapful number since it is divisible by the number (42) 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 4380012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6971328).

4380012 is an abundant number, since it is smaller than the sum of its proper divisors (9562644).

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

4380012 is a wasteful number, since it uses less digits than its factorization.

4380012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 4380012 is about 2092.8478205546. The cubic root of 4380012 is about 163.6157472343.

Adding to 4380012 its reverse (2100834), we get a palindrome (6480846).

The spelling of 4380012 in words is "four million, three hundred eighty thousand, twelve".